How good IS parallels?

Hey duuuuuuudes

I’m in the market for a 20inch iMac for two reasons,

a) I need parallels to be able test everything I make in the windows world
b) I need a desktop workhorse for home

Basically, my question is this,

Since I’m willing to save my money for a few weeks and drop it all on a new iMac just because I need parallels, I need it to actually be good. This isn’t an immediate issue, I’m probably not going to buy it until the apple thing in january… as they’re probably going to update all their models.

Does anyone have first hand experience with this thing?