this is a huge company i am reseller, and yes alot of vps are unstable as small companys  are over selling hardware that is being used by other people,

if you need a vps i am setting up a data center and none of my hardware is oversold its all dedicated to you and not shared hardware, i will be offering a 5 day free trial for my vps so if u dont like it you dont pay and vps will be closed after 5 days, i will let you know when i am setup as i am wating on a new firewall so i can use my othe public static ip addresses, you can view my packages here but please dont register as its not ready yet http://supervps.org.uk/ we also have online support if any problems