The Axis AFK might be a good choice. It is very similar in construction to the 710 with a more ergonomicalizationated handle and a thumb hole instead of a stud. It comes with D2 and 154cm blades. Though there was something that made me choose the 710 over the AFK.
Buck Strider has the sturdy construction with a G-10 handle but is a liner lock and a bit blocky-ish. Blade is ATS34 and BG42 if you can find a pre-pro one I think.
Spyderco Chinook is also made of the same sorta stuff with CPM440v steel. It is a lockback. Military is good too, I even like the weird compression-locked Gunting.
SOG Vision comes in a few sizes and versions. Has the ARC lock wich is like the Axis and comes with G10, Titanium and Zytel handels. ATS34 steel on them, you can get plain edge versions from the SOG factory though there arnt many left.
All these fall in the same price range as eachother and have similar qualities. I like my 710 a lot though, I wouldnt say they were a replacement for it.