I both enjoyed and was annoyed by TotLM. It's as described by pritchke, a lot of hack and slash with some puzzles. It does have some good challenging fights though. Downloading on at 56k connection would probably take a long time. Maybe set to download while you're sleeping, and when you wake up it will be finished.
If you do download it, here's a tip: Buy all your supplies, especially arrows, before you go there!