I liked Tankor. Never had Octane myself, but this was a fun figure with interesting transformations, and cool weapons. Sure the robot mode isn't as good as some other toys, but I didn't feel it was particularly hampered by alt-mode kibble or anything. A nice figure I was happy with purchasing.
Lots of other good ones in the various Classics, Generations, RTS, etc lines and it looks like there'll only be more on the way, with Springer, Blitzwing and of course Metroplex.
I'd suggest looking at the recently released Seeker 3 packs if you're looking for those guys, as it's really hard to track down some of the single releases for a good price and with those sets they'll all match better.
assembling a Neo-G1/TF:TM cast. Please PM if you have (or know of) the following at a reasonable price: Classics or Henkei Prowl, Astrotrain, Ramjet, Skywarp, Sunstreaker, Sideswipe, Blurr, Perceptor, GDO Wheelie and Springer, or 3rd Party Motobot Arcee, FP Springer, iGear Ratchet and Ironhide, City Commander (and/or Ultra Magnus), Starscream (deluxe) Coronation add-on, or Spike and Daniel in their Exo-Suits.