Compaq.... hmm.... I think I'd rather have the plague than a compaq computer. Every single one I've ever used has been slow compared to a same spec unbranded/different branded model... something to do with motherboards and architecture, apparently.
I personally use AJP (
http://www.ajp.co.uk/) who have a subsidiary now, 'ultra'. I had an AJP for 3 years (before it got nicked) and had only one problem... probably due to the fact that I dropped it. The subsequent servicing was reasonably priced. After that I got it named on my insurance! But then it got nicked.
I replaced it (rather, the insurance company replaced it) with a Pico. Machine is fine, but the company is WELL dodgy... bargepoles at the ready.