What kind of play pen does everyone use for their Russians?

[mangoandmimi]

I've also got the wooden & metal playpens cypher linked. Both are good but I do prefer the metal one slightly, just because you can add another one on to create a much larger playpen. Gives you room to sit in there if you need to.
I also accidentally knocked one of the doors in the wooden one while dismantling it the other day, and it almost fell out. Now that the door's taped back it's usable but I wish they didn't make push out doors!