I think NetSurf is the most popular browser in the small community that still uses Amiga computers.
aweb works on every Amiga and is open-source, but bad support for current www, and quite unmaintained.
ibrowse requires 68020, is reasonably fast but sadly proprietary. Better support for current www, but not great.
netsurf has probably the best support, but is the slowest, needs a lot of RAM and crashes a lot in my experience. It is probably much better with RTG, which I do not have.
Most of the time I'll just use AmiGemini. It is very fast and supports Gopher/Spartan/Finger besides the Gemini I find horribly designed and personally do not care about.
(mainly use my A1200, 68030 @ 50)