The manufacturer is a good one. Very reliable in its stock condition. Can be upgraded with new parts if wanted. If you want more depth about TMs or other Manufacturers search the forums, there are many threads about them. As for "is this a good gun", it all depends on what you want. Want a gun with alot of metal parts on it? Then TM is not for you. Want a reliable stock gun, then you got a good gun for what you were looking for.
For the gun case, they sell gun bags that are cheap. $20, you can find them almost anywhere. I place mine in a gun bag and transport them in my trunk.