(Not picking on you, Yasu)
I understand that not everyone has a big system, but come on, this is why we can't have nice things.
The "it's gotta work on an A500" mentality didn't help us in the 90's and it's not helping now.
At some point, you need to get some upgrades if you want to run software that wasn't made in the 90's, for 80's systems.
It's a good question.
You can't expect a Classic to offer Chrome levels of speed, that's crazy.
I think with an 060 and RTG you should be able to create a 'usable' browser experience, AGA wouldn't be as usable of course but should still be better than using IBrowse.
Usable doesn't mean fast or fully featured, just that most sites would work and be rendered before you get bored.
Anything less than an 060 (or FAST FPGA!) would be better off sticking to AWeb or I browse.