I need a drum machine for electronic music I play. I used a Nintendo DS (hacked with flash cart) for quite a while, but the drum machines I had pretty much sucked. I've seen quite a few in the appstore. Most notably, iDrum Club. Is this the best option for an actually usable drum machine? I need it accurate - no wavering tempo nonsense or crappy tones. Is iDrum my best option, or should I look at something else?