From what I gather, the learning curve for 3D Canvas is much easier, that is UNLESS you have already dived into Gmax/3dsmax. I doubt I'd be alone in saying this, but due to the uniqueness and complexity of the Max interface, once you learn it, it's very difficult to switch. If you do however get used to the Max interface, you'll love it 'till the end.
For 3D Canvas there ARE exporters which will export directly into TRS.
All I can recommend is try out both, and follow as many tutorials as possible. There are many for both editors.