Yeah BM3 did have some serious crashing issues initially with ios11 but it’s happening less and less with each update intua put out. I haven’t had it crash in a while now. At first it really pissed me off, it’s a lot better now. The bonus of iOS is you get constant new stuff coming out, faster updates than any hardware I’ve ever seen, quality synths, more sequencers, An ever expanding library of FX to choose from, and you can watch Netflix on it
OT and MPC go hand in hand, they fill in each other’s gaps well. If you’ve got the funds to drop I’d highly recommend it, just go for the old 30 day trial and see if it’s for you.