Nanostudio 2 as the DAW, Pure Acid and Troublemaker for 303s. Outside of that, I think I probably own about 60% of AUv3 soft synths on iOS, 100% of the AUv3 drum machines, lots and lots of FX AUs. I own all the DAWs, but stick to Nanostudio 2 as it's a work of art - never crashes, incredibly ergonomic, and it absolutely nails touch input. All the other DAWs fail dismally on one or more of those three points, Cubasis used to be really good (version 2) but they killed any and all good will with version 3 which, two years in, is still unstable and has much worse ergonomics.