The H-182 is the best deal because it's cheaper and it's a console with 25 pedals. The T-212 is a spinet although I believe it has a built-in Leslie.
When the H-series organs are working properly, they sound very good. Tons of bass, lots of animation with the vibrato's. They are however delicate and seem to have more problems than other models. If you become versed in servicing it, it can be a very good learning tool and you can keep it going for a long time. The H-series was a hybrid, tubes and transistors. Although the transistors don't give much trouble and the tube circuits are very mature. The biggest problems are resistors going out of tolerance and capacitors going bad. This all due to age.
Once restored, the H-series can kick butt!