It's not that every tank is different to maintain corals. Much of is the owners maintenance schedules. If you have an SPS dominated tank, and you never do a water change or dose calcium, then it probably won't work out, right? Softies can handle fluctuating parameters better then LPS or SPS, though LPS isn't much harder to do, as longs as you research before you buy, you'll be all good!
OP- Stock sounds good. How's the cleaner doing? Or did you return him because there no check by his name.