We used to offer the old UBC based VPS's using Virtuozzo but about 2 years ago moved to the new Virtuozzo based SLM VPS's. We find it superior as it doesn't have tons of artificial limits set and in fact works like a Dedicated Server would in the case of RAM. Hope this helps.I believe KH VPS does not use burst RAM. Is this correct?
Also, does KH use SLM RAM?