we just returned from the 7 night eastern cruise a couple of weeks ago, and had 8034. we thought it was great, and heard very little noise. moreover, we were told (by the woman who books future cruises on the ship) that the mid-ships cat 3's have the fifth bed in the living room (with the sofa bed), whereas the others have the fifth bed in the master bedroom. since we have five kids, this made a big difference to us; we hadn't known this in advance, but it would have definitely steered us towards a mid-ships cabin.
we thought the cat 3's were terrific, and while unquestionably a splurge, well worth it, both for reasons of space and the concierge service (which is a whole other story).
i'm sure you'll have a great time whenever you go and whereever you stay.