Im using a Curve 8900 and Beta Bolt browser and I done a little test in work on O2UK, there is a cellsite on the top of the building so you can get perfect 3G and EDGE signal.
3G on O2UK is 3.6MB I thought I would test the Curve8900 EDGE with Bolt against the Bold 3G with its native browser, my Curve loaded up crackberry.com about 20/30 seconds before the Bold.
I then done a test to load up crackberry on my Curve8900 EDGE with Bolt against an Iphone 3G using safari. My Curve loaded up crackberry.com about 3 seconds before the iphone which was using 3G.
Then a Curve against the Bold both using Bolt loaded up crackberry about the same time. I dont know about anyone else but im finding the Bolt browser very impressive! A definate must have download in my opinion!