All in all, the sites I visit normally work well on it. Much better than they did on my iPaq (even with Opera Mobile). Speed is not bad except on really heavy javascript laden sites. Flash video's hit or miss - if it's fully cached, it'll usually play without hiccups. If not, it might drop frames (so the video's a little stumbly).

Pretty much any site that doesn't use plugins should work if it works in Firefox. It's the same basic rendering engine.

All of my banking sites open up just fine, too.

I'm happy.

My only complaint is that I can't use my traditional desktop style of browsing - loading up a bunch of tabs and then going through them one by one. There's no hard limit, just if you open too much it'll start showing signs of being taxed.