Are you asking about the 18" or the 16" bass drum set? I like the 18" set better, though I've used the 16" for a jazz gig and it works really well. Personally, I like the sound and the size (I'm not tall and my limbs are short). If I had extra cash, (can't remember how much) I'd get the 18" set, for its portabilty and relative good sound. The depth of the bass drum and smaller diameter, makes for deep, yet focused punch. But of course not as deep as a 22" bass drum la. The rest of the set is alright, just a matter of tuning them right.
Being a Yamaha, the hardware is quite good. And you can always get the parts locally. It's not like my Gretsch 16" bass drum. I don't play it much now, cuz I'm afraid to wreck the custom-made wood hoop, cuz I can't get that here in Singapore.