Lets assume you have to have a tech 3 times for 600. Thats 1800 bucks. A new Cameo is 8-9 grand and should last 12-18 years. For 1800 bucks you should have 4-10 years left.
What part of the country are you in? i am in georgia and i have not seen any pipe freeze and bust in the foam.
Chicago area. Was absolutly the most brutal time of the year last years winter. Pump died and the noises the tub was making was horrible. We made a stupid decision to shut it off and hope. That caused it to freeze up. The pump was replaced in the spring and then we refilled but hat terrible leaking. We pulled out the foam from one area and found several leaks. We havent done anything since then.