Sorry, this is really boring.
We are looking for a new freezer, but I'm being indecisive about whether to go for a frost free one or not.
I think the one we have is frost free (stuff doesn't seem to end up frosty, but it does build up loads of solid ice at the bottom that I remove with a chisel every now and then). The majority of freezers we've seen have been manual defrost, though, which implies frost free is either (a) actually a bit of a rubbish idea or (b) good but not worth the price.
Curiously every internet forum thread I've found has either been fully in support of frost-free or fully in support of manual defrost. This makes my head hurt. Therefore if somebody could just say "go buy a <frost-free / manual defrost> (delete as applicable) because <insert overwhelmingly logical argument here>" that would be most appreciated...