I would like to start doing some TIG work and would like some guidance for purchasing a welder. I have a hobart 135 MIG right now that has served me well but would like to upgrade if the price is right. Here is what im looking for: 1. a/c and d/c TIG (want to do some aluminium work 2. Multi process, MIG capable 3. Dont break the bank $1500? Is it better to have seperate welders or a multi process? Pro/con Thanks!