First of all, there's only RS3 and 07. Runescape is Runescape 3.

Runescape 3 = good graphics, lots of content, crap combat (imo).

07 = Repetitive, boring, GREAT combat/pking.

07 - Meh graphics, Okay combat (The only skill to the combat is speccing at the right time), More of a challenge (Less AFK and free xp etc), Mod Ash, Reach and another I think work on it Mod Mat K for community stuff which is great but you'll be getting Mod Wreck3d soon as well, Community chosen updates

RS3 - Good graphics, More immersive combat (Always spec), Not hard to gain levels first 70 levels in every skill are pretty much handed to you, 99% of the J mods working on Runescape work on Runescape3, Community can't choose updates but can rage at Jagex on forums to get stuff changed back e.g. Juju Mining pots

All I can think of atm

so best thing to do is play rs3 ? still includes like castle wars and duel arena and all that good stuff right ?