The Reptus not only sold me as a faction, but also got me to play Warlord to begin with. I was content to collect the figures I liked from the whole Warlord line and use them as appropriate for my tabletop RPG, but the Reptus figures kept turning up again and again in my collection. The more I bought of them, the more I liked them. When I finally realized that I could easily field a 1000+ point force with just the stuff I owned and had painted, I decided to give Warlord a try. Now I'm hooked.
So, Reptus are a no brainer for me, and of them, the no-brainer favorite sculpt is Ra'am. He is such a bad-butt on so many levels as a figure. I could care less what his stats are; I'd field him even if he sucked. Leave him at the back of the deployment area and not engage so that he could be the last figure standing even if I lost... ;)
~v