First I would like to say to the OP that this is a very personal issue and as you probably are already aware you need to go hit all these clubs and find out for yourself which one works for you both from a visual and performance standpoint.
Now with that said I will address the clubs ypou mentioned and maybe suggest one more to consider as follows:
1) Mizuno MX 200 - I have never gamed these but I do not like the look of these visually (you know what I mean...when I set it down do I immediately feel like I can hit it)...NO...again this is a personal visual tyhing.
2) Cleveland CG7 Black Pearl - Last fall when considering changing irons I hit these for a while at the range (along with other irons) and they felt clicky to me...they just did not seem as solid as other clubs I was trying at the time...again this could be a personal feel thing?
3) TM R9 - I have owned these clubs twice...yes you read that correctly "twice" in that in the fall of 2009 I was playing Srixon i-701 tours and bascially these are blades with an apperance of a cavity back and since ball striking is the worst part of my game I decided to give some GI irons a try and man when I hit these at the golf shop and on the range I was killing them...anyway they did not stay in the bag. I had shoulder surgery in Jan 2010 and for some reson (bored during long recovery) decided to change my entire bag. Anyway my change did not work so I went back to the R9's AGAIN! I was playing pretty well with them and then my coach had me hit these Cleveland CG1's (blades) and I loved them (honeymoon) and so I switched again...dang it

Since then I have switched coaches as this guy was always trying to get me to play blades or Player irons (maybe because I am an 8 handicap and he thinks I should be playing that type of club?) but ball striking is the worst part of my game meaning if I hit the ball well or even fairly decent during a round I break 80...but if not I struggle to break 90...weird. So I have finally decided I am a GI type of guy and decided to look at all the GI clubs available on the market and did some serious testing. Examples of clubs tested: Titleist AP1, TM R9, G15, Adams CB2, Diablo Edge, etc...
I went with the Titleist AP1 (upgraded with the KBS Tour stiff shafts)
Edited by i-Guy - 2/27/11 at 7:00pm