So i think the best way to describe the roms i have used is to match them with cars.
Cm7 is like a volvo, very stable and reliable, but very boring.
MIUI is like a old purple painted peugeot full of apple stickers. There's nothing wrong with it, but you cant get yourself to drive it. (at least icant)
Sense is like one of the best looking bmws, extremely cool and everything, but that is until you find out that it only has a 70 HP Diesel engine, so it is very slow.
ICS Is like an electric car. Very innovative, very nice development, but it is still a wip and buggy.
Ill stick with cm7 unntil ics is done.