I have an ACP Hunter 216, I do live in "extreme temperatures", but I have never experienced the cracking some reported with these boats. That said, my boat is stored indoors, so although it does get below freezing, it is not subject to rapid changes. There have been numerous posts on this site, many narrated by Crazy Dave, explaining this boat's particular problems. Based on these and my experience, it seems that the fault was a cheap batch of plastic, not an inherent failure of the boat or design. Looking back five years, I would buy the boat again. It is a great daysailor design, and I guess the small sister 146 would be as well. Other than the cracking, the ACP is a good product -- it is more durable than fiberglass and takes minor dings and beaching without a mark. The rudder on the 216 is a VARA inserted rudder, rather than hung off the transom, and it is somewhat of a pain. I don't know that rudder on the 146.