Anyone getting new computer nowdays should not buy one with AGP slot, those are old technology and it starts to be difficult to get gfx cards for those so if one buys new computer at least check that it has pci-express slot and 1GB of ram, I'm serious 1GB is soon needed so better get that already.
There was just released new CPUs from Intel and AMD dropped prices so now you should get decent computer with quite good price.
X800XL based gfx cards have been also offering incredible performance for their price, can be just hard to get those already.
My experiences are that HP computers have been quite good, there is not so much faulty units from factory than some clone manufacturer, but they can be bit limited for more advanced technically minded user, but for those that don't care to get too much into computer tech those are very good option. Btw, I was really against HP and Compaq once, but seeing computer business from different angles I have had to change my opinion, when computers are tools used for business there is no point even think about anything else than those big names, well also Dell/IBM, but there is not many other options because others have more trouble with quality and aftersales support and service.
Of course it depends a bit where you live to what is available and so on, but I believe quite big part of this is global.
So there is no single solution, it depends what type of user is and what he/she would like to get, for some clone machine is ok, for some building his own is ok, for some big brand machine is that suits best.
Price that you pay from computer is about same what machine you get if you look it at long term, if you buy weaker machine you need to get new one just sooner than if you get more powerful machine. Of course avoid latest HYPE technology, you may get incredible performance, but if you can get 10-15% less performance for 50% less money it is quite clear what to choose

Anyway here is my thoughts about getting new machine, maybe after being more or less in business over 10 years have made me thinking like old man, but I feel it is needed to keep head cool and take bit distance, then look what are needs and base decision for that more than spending everything to latest stuff
