i have the 2217 on my 72, i love thw filter. its very quiet, as long as u submerge the spray bar, u cant hear it. if i were you i would get the 2217 instead of the 2215. overfiltration is better than not enough hence why i got the larger canister. It's larger, more media capacity, more powerful in general. since you are already dropping a decent amount of money, it would be better to just put in the extra 20 or 30 bux.
not knocking the 2215, based on my experience with its bigger brother i would expect nothing less than quality.