I am hoping long-time owners of the Brinsea 20 advanced can give me their feedback. We are considering purchasing it but are concerned whether we'll get enough use out of it to justify the cost before it goes "kerplooey" since it would only be used a few times per year. Is there anyone who has been using theirs 5+ years that is still pleased with it? How frequently has it been used? Anyone with one of any age that has used it like a workhorse?