Ditto to the comments above. Most any SS tank should be OK, although the ones with a (slightly) flexible plastic top are probably preferable to most users. Be more concerned with getting top-flight (Hewes, Kinderman) reels. This topic has been discussed extensively here on APUG. Do a Forum Search.
Jobo 15** tanks hold 2 120 films on a single reel. I find them fairly convenient but you'll need to cut the corners off your film to get the first one all the way to the centre of the reel.