I continue using IBrowse as my main WWW app. To my understanding so does many others. (MOS and AOS4 users)
The only reason to use iBrowse on MorphOS is when you are using an Efika, because of the 128MB memory limit and even there it is possible to use OWB, if you pick the right version and save memory where you can. Speed if more than fine. It even plays videos, so speed is not an issue. Tabs and picture loaded pages are making OWB usage on Efika a pain for sure.
OWB on MorphOS has all iBrowse features, looks like it, is for free and even is included on the MorphOS CD.
Why would anyone mess with an outdated web browser, which produces the longest websites on the planet? (missing style sheet support) If you prefer that look you can configure OWB to look like ibrowse again and to create the same ugly page layouts.
Geit