I really would recommend a tunable drum. I've got one which I bought on spec from the Newcastle Drum Shop (UK). Don't know who made it but after a bit of work it has turned out really well. I sanded down the skin and treated it with Flexolan, a lanolin based leather treatment. If it had not been tunable I would have edged it with wide black scotch tape to cut down on overtones but I can handle that by tuning. What I like most is that I can play it quietly and get that deep 'push' without being intrusive - and it only cost £75 plus a couple of hours work!