I also have an Optishot in my basement. I have the correct lighting and because it's in my basement sunlight is never an issue. As i wrote in another thread about the unit I think buying an Optishot was the best $399 I've ever spent on "Winter in New england" golf. In regard to reading drivers, it depends on your driver, it reads irons real good. They actually sell a driver made to read well with the unit fairly cheap so if you bought one and weren't happy with how it reads your driver you could always buy theirs which is specifically made to read well with the unit.
It's not REAL golf, (No simulator is) it doesn't know if you opened the club fact to add loft, you can't take a divot, you don't feel sand when your in a bunker etc. BUT it does most everything a real expensive simulator does. Expensive simulators do it with high speed cameras reading the ball, Optishot does it by reading the club head. Oh and you can't take a divot or hit out of real sand on a $40,000 simulator either. $40,000 VS $399 ... the difference in experience using the units isn't anywhere near the difference in cost.
Personally I use foam balls hit into a suspended sheet. I may get a projector down the road but i actually had to buy a computer for the unit because all my home computers are MACS and i didn't want to use bootcamp and put Windows on one of my MACS. I don't think it would run as well through bootcamp as using an actual PC. SOOOOOO I spent my projector money on a desktop PC and monitor. The PC is ONLY for the Optishot, it's not used for anything else so i consider it part of the simulator "package."
Even though i had to spend $700 on a PC i'm still thrilled with the Optishot. It's NOT real golf but it does give you awesome information in regard to what your club head is doing at impact so you know what you need to fix in your swing and bottom line, it's fun! It's simulated golf BUT you FEEL like you're playing real golf and that's a great feeling in the dead of winter. How can you lose for $399? OH ... It's plastic and some have questioned how strong it is. Well I've hit TONS of fat shots and have been playing almost everyday since December 26th 2012 when i bought it and so far I haven't had any issues! I'm not afraid of wacking it anymore. (I was at first but it's holding up great)
So my obvious opinion, go for it, you'll be glad you did. Especially if you're snow bound like me.