Which Hybrid combo do you think?

Don't let that 3 wood get a free pass into the bag. Just because most players have one doesn't mean it's the best use of space.

I use my titanium 13 degree 3 wood for the following:

-Ground strokes from 260 or more, where my hybrid would get too much height from getting hit that hard to roll out. My 17 degree hybrid is more forgiving and a lot easier to hit off the deck due to the shorter shaft, but if I must choose a different club I have the option of the 3 wood. This distance is impossible to control on a green, and the situation that requires this shot comes very rarely. 

-Strokes where I want roll/release, or to keep it low as possible without sawing off my finish.

-Flighting it low, I struggle hitting my long clubs really low including my driver. I can hit it high, especially off the tee, but this club will stay straight and have enough spin to stay afloat even when delofted a bit.

-If I'm trying to thread a tee shot into the 270-290 range (in theory) and think my driver might roll into trouble, through a green, or don't know how the big stick will carry. Some courses have par 4s in the 280 range, as an example. Strong 3 woods are quite long off the tee.

-Guaranteed fade; the 3 wood is 2 degrees open and hard to turn over, so I can guarantee it will cut back. I could hit this club on a dogleg right or aim it straight at OB and know it will always cut. If I close the face down much it will have too little loft to carry 220+ anyway.

-If I just want all the length I can get off the ground, like from rough or after a topped tee shot. 

-If I'm just killing it that day and I'm overconfident. If I execute my swing well it works great, but I need to be focused.

I don't use it as a backup driver or a tee club on tight holes because the driver and hybrid are each better. I choose 13 degrees of loft because I have about 2 inches of shaft length and 4 degrees of loft between my 3i, 2h, 3w, and driver. I feel the 3 wood would be one of the first clubs kicked out of the bag if I needed to, after the 4 iron for me, because it's such a specialty club. Hitting even a 15 degree off the deck is such an ill advised shot, I'd never pick it over my hybrid. At least the 13 degree is a bit longer, and the flight I get is worthwhile sometimes. The hybrid is my first choice from 230 to 260 yards, and doesn't require a moderately hard swing to hit.

If I were you I'd see how I get along with hybrids at 19 and 16 degrees and no fairway. I consider my long clubs to be an asset for me, but I know the limitations. You know your game better than anyone, so if that 3 wood is your money club then by all means keep it. And I'd try and hit the older Adams hybrids with the slot, like the super SS and XTD. They are ridiculously forgiving and should be available new for 100 each or so.

Interesting L/W, 3 woods are a real relic I reckon. They're only use is as a 2nd shot on a par 5s .....when you're trying to get a birdie. If you're not trying to birdie then you'd use the 3or 4 hybrid to lay up for a pitching wedge.

The basis of the 3 wood seems to me to be part of a theory that says you have to carry a club that corresponds to a certain distance.

Even though the idea of carrying a club that is so specialized it only gets used twice or three times a round isn't enough. It really is only of any use to big hitters anyway. I mean, if your a guy who drives the ball 200 to 240 yards with the driver, whats the point of carrying a 3 wood? Lets say you tee off on a par5 and hit it 240 yards, there's no way you're going to hit your 3 wood off the deck another 240 plus yards to get you're cheap birdie. A 3,4,5 hybrid would be the better stick to use then get a good pitching wedge in to the green.

Amateur golfers need to analyze their games a bit more. Club selection is another example where amateurs should not look to pros as a model of how to play their game. 

To answer your actual question though, consider the fact that the titleist hybrids are adjustable for loft. If you pick up 2 of them, you should be able to fine tune them to best fit your own gaps. I'd personally have a hard time spending that much, but I am pretty broke. If you go with the 16 or 17 degree plus a 19-20 degree, it should be adequate. You're allowed to have a little gap between your hybrids and longest iron, you can always choke up the hybrids to take off a club. Look up the chart to see the full range of lofts, and remember to experiment.

Hybrids are one of those clubs that I'm glad I have one of, but I find that's enough. They're versatile but I'm not shy hitting my long irons; I have all the clubs I could possibly fit from my iron set to match, anything not matching my irons is a specialty club in its own right. 8 irons, I have a putter and driver, then a wedge for sand, a wedge for specialty shots, a hybrid and a fairway. Good luck getting the right clubs.