I actually finished the RTO Period on my Dacentec

(Not to be a hipster or anything, but I did get a RTO dedicated server from them way before everyone else joined in).
It was a great experience, but you had to let them know ahead of time. Get everything sorted out, etc. They're pretty open to communication so I didn't have any problems with them.
Funny thing about the other client/handover thing. I believe it's actually just following proper procedures to minimize legal responsibilities, so when I did sell my Dell Dual L5420 hardware (and had it moved out) I had to be the person in the middle mediating it. I mean yeah it was annoying to an extent, but it's reasonable and I do see it from their perspective.
Basically, I enjoyed my time with Dacentec. Network could have been a little better but yeah having nLayer now makes it attractive again. Haha I do miss the days of 40/month Dual L5420 RTOs that Dacentec used to have.