i've had my eye infinity for a couple of weeks now, and i definitely would miss it if one of the screens broke.
it's fiddly to get set up initially, but when you do get it working it's great (you need multiple profiles etc). I'm a programmer and triple screen coding is nice, code on the centre, app running on the left screen and sql server on the right, can see everything i need.
gaming on the other hand, you have to accept that lots of games don't work, the field of view is screwed and you have to download additional add ons to fix it (like widescreen fixer) otherwise the games look stretched. The games that are eye infinitity approved though work a treat
casual gaming on 3 screens is great, medium to high res, lots more to look at, but i still find my self when i want to do some "serious" gaming like mmo raids or fps multiplayer dropping back down to one monitor.
but best thing, is still the look on your mates face when he see's you gaming on it... pure envy.
and it's worth it just for those moments.
So there's my own eye infinity hands on.
hope it helps.