Really hard question...
I like 710 a lot, new Axis AFCK fits my hand even better but both are onto big side for daily carry in urban environment.
940 Osborne, on the other hand, I can consider rather as dressy knife. Its hand is a bit onto thin side to apply entire my force. I also regret to waste its nice look in heavy job.
730 Ares is just right in size but...
551 Griptilian has the same dimensions and it is clear winner in bang for buck competition and it is my choice for daily carry!