I have heard positive feedbacks about this company, but I advise you not to concentrate your attention only on one company and for recommendation, check out serverpoint.com, vpsland.com and lunarpages.com. Just compare their offers and you will see the difference. They are stable and you can trust them all.
I have heard good things about the company you have mentioned, but you should broaden your search in order to find the most reliable one. Have a look also at exmasters.com offers. This stable company will meet all your specific needs.
If you need to find hosting company which has narrow specialization in VPS hosting, I am sure that microvps.com would be the best choice for you. Settle for a reliable host that charges a reasonably high rate and offers good service.
I think specialization is good, from the clients standpoint: this means provider knows how to make everything working. So, microvps.com has the abundance of good feedbacks and this makes this companies preferable.