I would happily come back if LMDE was consistently maintained, and stable enough to use on my client's machines. I can't see that happening if it is based on debian testing instead of debian stable. I play with Debian Jessie on occasion, and it is still too unreliable to use for everyday work. If Linux Mint used testing, they would have to keep their repositories constantly updated with new packages as they become stable enough to be used safely. Considering that Linux Mint's first priorty is keeping up with new Ubuntu releases, I don't see how they will ever find the time and manpower to keep LMDE up to date unless it is based on debian stable instead of testing. Stable gives a much longer time frame to work with for Clem and other team members. If i switched back it would be simply for the ease of installation and setup, not performance. A Debian Wheezy/Mate 1.6 combination works great, but requires much more installation and configuration time. I want what works best for my clients for the long term. They don't have any desire to update every six months or year. The Debian stable cylce works for them because that is about how often they need to have their equipment replaced or serviced anyway.