Web browsing on par with a 2 year old iMac? That's awesome. I can't wait to try the Air out. Ordered for store pickup at midnight last night, but had a long work day and won't be able to trek up to the Apple Store until tomorrow.
Considering iPads (or basically all tablets) use ARM processors, that makes them significantly less powerful than an x86 processor.. Especially a quad-core i7. So yes, awesome.