VPS runned 97% flawless to me.. but I don't have really load on it.. (maybe 20 visitors daily). However there were few days that for no apparent reason my server reched limit of two resources and sites stop working (it was happenig repeatedly during like two days). I didn't do anything on server so it's total mistery to me why was that and support wasn't helpfull in that case (they told me to restart server after I did it few hours earlier
).
It made me anxious about VPS. Due to open of new site I'm expecting more load in next months.. if it would be problematic I'll probably move to other host.