i have compared my ib2.3 with the latest version of IE some time ago and i found (and the pc owner) that IB2.3 is infact FASTER than his IE , but this was done on amiga compatible sites only, ie stuff like AMIGA.org etc..
anyway i am on a PPC+060 1200 with a mediator and voodoo3 , and i use the internal image decoding and not external ones like warpdt etc.
anyway sites which have flash and such is rather fast on amiga due to it wont show it, but then again everything will look less stylish but that aint a problem for me since i aint a web fanatic:)