Both are good cameras. At the end of the day it's up to personal preference. You probably know it already since you've read a lot of review, so I'm probably stating the obvious:

Get E-P2 if you:
- Really need the great EVF bundled with it
- Have a lot of legacy lenses and planning to use them on your Micro Four Thirds (E-P2 has In-body image stabilizer, GF-1 depends on Lens)
- Want better JPEG out of camera (the colour is known to be more vibrant compare to GF-1)

Get GF-1 if you:
- Need faster AF speed
- Need better LCD screen
- Need the built-in flash

14-45mm-sgd250
45-200mm-sgd550
14-140mm sgd1100-1200

A little Google may help   ... anyways here's the link that may answer your questions:

http://www.panasonic.net/avc/lumix/systemc...lens/index.html

All the lenses in the link supports Mega OIS, except for the 20mm F1.7 pancake and 7-14mm wide lens. So if you get GF1, better use Panasonic lenses.