Now I moved to Aplus and I can strongly recommend you them. Becides a value dedicated server you can get Plesk Control Panel with licence for 30 domains for no additional costs, which is great!
Plesk can save you a lot of time configuring the whole machine's services.
No, I haven't experienced a long term partnership with them by guys from MySQL Performance Blog are very pleased with Aplus for years.
Try them - www.aplus.net! ;-)
You will thank me later. :)