Have both, love both, and while I think Maiden is a better game, if you live around civilization you'll surely be able to play it somewhere. To put numbers on it, using the Pinside map, TBL is in 16 locations in all of North America, and some of those are in distro showrooms, open 1-2 days a week boutique places, or whatever. Iron Maiden is in 469 locations.
edit: Just noticed you're in AUS. So 0 TBLs there, 14 IMDNs if I counted right.