I have many ice dives under my belt and all were done in a 7mil wetsuit in Lake Erie. I have always used a Sherwood Blizzard and with the proper care have never had an issue, the key is the proper care and pre dive practices. There are other regs that will do the job but that is what I am familiar with and many divers in my area also use the same. I,m sure you might be more comfortable in a dry suit but I am just to stuborn to go that way.