The DaKines are keepers, a reason to shed some others. Mostly the same with back zip, but in 3/2 I have an extremely good backzip thanks to a promotion from 7tiil8, a decent-fitting Feral, and a couple of chest zips, so can drop backzip O'Neill. The Heat is an "old" model but toward their upper end, $380 vs $220 for 3/2 currently. DaKine periodically offers 15% or more off (recent big sale was 25%) so their 2mm backzips (priced at $130 and 200) can be decent deals, and seem to be regularly available in xxls.