I wonder if you have VPS server and how have you came on it? Have you switched from shared account or VPS was your first web hosting account ever?
I think Dedicated is best over VPS. It depends on conent you are hosting on web... If you have purchaced VPS do not ever use PHProxy or SMF Want Shared Hosting visit inversehost.net
I've downgraded actually. I owned a large forum, using 3 node cluster. Once it as sold, I was on a high-end dedicated box. Next came a P4, then a VPS, and currently I'm on a shared hosting because it has only a couple of personal sites. Keep business apart.
i used a vps, but i found out there is no difference besides "Root" access. Overall i am happy with shared (i dont have to worry about anything lol)
To be honest, you should always go with shared hosting FIRST and build your way up. If you are in GREAT need of a VPS, you can buy one.. there are lots of great hosts and deals out there. Google is your best friend.
Shared hosting gives you peace of mind (letting others take care of the server) for you to concentrate on your sites. VPS is always better (you control everything), provided it has decent resource amounts.
VPS is much better in many ways than shared hosting. And I believe it must be taken from the reputable company (vpslink.com or globaltap.com) as these companies help their customers much to solve the problems if there are any.
I started with shared reseller hosting. Later, I started using VPS to run a gtalk conference bot. But I got so so many disappointments with the vps. You need too much time to take care it. If you don't need, the shared hosting is best.