Although only (currently) for AOS 4...
bzzt.
http://aminet.net/comm/www/Netsurf-m68k.lhaHaven't tried the latest one myself, but one of the earlier ones looked pretty nice on my 3000T running 3.9.
As for AWeb vs iBrowse, I lean heavily towards iBrowse. AWeb seems even slower and less compatible with today's web than iBrowse.