I was working for a Honeywell distributor and I took a job with a controls company that deals with Invensys/Seibe (now TAC). When with Honeywell, we used AX but the new company I'm with utilizes R2 and Work Place Tech. Would it be prudent for me to switch the new company I work with to AX? I'll tell you that it was hard to go from AX to R2. It was knind-of like going from flash memory back to the days of cassette tapes. Weird indeed.