The Vader ESB FX hilt is actually a bit easier to fit everything into. That is the easiest FX hilt to modify IMO. It has much more room, as the Maul FX hilt is noticeably smaller in diameter.
I will get some sound clips up, or you can email me and I can send you some samples. We also have a new sound board coming out that uses my patented tech and is totally programmable. That is, you can put whatever sounds you want on the board, and the board and speaker all resides in the hilt. It will be very loud too. This board will be a mid-level board that is better than my current in-hilt board but not as high quality as the bluetooth wireless version. It should have all the features that one desires in a sound module too.