I am looking for a good host to get a VPS on which I will be hosting multiple sites with multiple IPs, with good support and whm. Knownhost was one I was looking into, anyone used them? I figure none of my sites that I will be hosting on the VPS will have a lot of traffic, and for the ones that will grow I will expand accordingly, but with that said, is there anything wrong with hosting multiple sites on one VPS as long as they each have their own IP address? I have had one VPS in the past but with a small provider and had trouble with the email server; even though I had 23 IPs with each siteo n a different IP I could only send/receive mail to one IP, which didn't seem to make sense to me.
Are there certain features should I be looking for to make sure I get the above?