In addition to gameplay comments, it is only £10 on www.play.com with free delivery, so even if you do not totally like it its not a big investment, or if you hate it (unlikely) then you could always send it back I suppose.

Or possibly get the demo?

http://www.3dgamers.com/dlselect/gam...o_5.5.zip.html

(Warning: I've personally not downloaded that file, but I got that URL from totalwar.com so I'm pretty sure it's clean.)