For a wile I 'forced' me to use OmniWeb even if i missed Safari! Many problems of Safari was solved by third part littleware and even the ugly 'brushed metal' appearance, so... why change? Simply to maker a REAL comparison!
Yes, OW have so much more options that you will perhaps never use it all (a REAL good manual would help us to dicover WHY the developers made such efforts to build it, as the workspaces I used far too late!) but after a month (2? 3?) coming back to Safari deemed to me each time more heavy!
A simple personal feeling? Naturally... like a nice girl with a good character and even a lovely mother! (I know, nobody will believe me!) Perhaps not fast as a bar fighter with 'brushed metals' everywhere on hi body, shoes and clohes but much more elegant, well educated and... why not? 'Sensual'! The same reasons (any) to have preferred in the 1984 Apple and never changed!