I also had a VPS with them also about 2-3 years ago for a little over a year. Other than one outage, I don't recall ever having my VPS down. Their NOC was excellent, I haven't yet have any other provider's tech support reply to my emails as quick as them . but like bear, I left because I outgrew it.
I'm pretty sure that you'll be in good hands with servint. Good luck!
I've been with Servint for 3 years and keep my 'important' domains there for the security, managed support, uptime and support response time. Regarding their $49 VPS they offer more data transfer than others but less RAM (256mb) for the same price. My comparable www.kickassvps.com VPS, which I use for gaming, has less transfer but more RAM (960mb).