What? UV mapping in Blender is good enough that some people use it for that only. I don’t see why seams aren’t good for hard surface UVs. Anyway, unwrapping isn’t the only option, you could probably get away with view projection for some hard surface models.
I’m not sure what you’re talking about, you don’t need to use bevel modifiers to bevel something, you just select something and… bevel it. You can do operations on part of the mesh, I mean, that’s pretty obvious, you don’t really do stuff to a whole object at once (maybe scaling I guess). Blender does what it tell you to do so if you work sloppily you’ll get a sloppy result, but it’s pretty easy to get precise results. It’s probably harder to do something sloppy. Also even for Maya users I would recommend with sticking with the default keymap and then changing the keys yourself.
Anyway, to say something on topic, yes, 3d suites are expensive. But Blender is free so you can at least try it out and ask on the blender artists forum or the Blender stackexchange if you get stuck.