I got maybe 30 hours from Torchlight. I've gotten 300+ hours with TQ (thanks to mods, too). I liked Torchlight, but I definitely like TQ more. It has a lot more depth, both in character building and loot stats. Don't forget to install the Fan Patch. Also, if you like mods, Underlord is the best one IMO (it includes the Fan Patch). Titanquest.net is the most popular forum of TQ and it's still pretty active.