"Read this before purchasing."4.0 starson by thopp
Pros: Quad Core, Bluray/HDDVD option, TV tuner, plenty of front access ports
Cons: mediocre graphics, small PSU, unnecessary external expansion
Summary: Before you decide to buy any brand of computer, especially from HP, you ought to have a look at the deal sites. They list any and all coupons, specials, and deals that stores are having. HP constantly has coupon codes available, and I purchased this computer for $650, via a $450 discount. Secondly, while configuring your system, please have a look at component sites such as newegg for price comparisons. 2 GB of memory costs ~$40, not the HP price of $100 or more. That being said, this machine is pretty great out of the box. If you are looking to upgrade it, I would focus on the graphics card. If you want to use this as a fairly gaming-intense computer look into a Geforce 8800GT or ATI 3850/3870 card (8800GT is the better choice imho). The problem with upgrading the graphics is that you will need to get a better PSU. On one of the many component sites, make sure you get one that fits the machine and has at least 450W (prob more like 550). I haven't yet checked to see how much clearance is available for the longer cards, but I believe there is enough room for it.
I have been reading comments about BSODs and such, and how people have called support for those issues. There are still a lot of problems with Vista (have been testing it for quite some time) and Microsoft has been issuing hotfixes for these issues. The only issues which HP can deal with are driver issues. If you really do not like Vista, I recommend dual booting XP (if you have a copy from your old computer) or go the free route with Linux (Ubuntu or PCLinuxOS are your best choices for average consumer). The Linux route is free, and the dual booting installation is fairly simple. The Linux community (esp Ubuntu) is very helpful via their forums and either of those mentioned options work very well (though I would say PCLinuxOS is the simplest).
This computer, at the right price, is well worth it. I tried building a computer for less and succeeded only by $40 after I took into account the need for a PSU and video card for the HP (they ought to have better graphics upgrade ability). I hope this will lead you to a better purchase, though I did not provide much with a review, I want you to be able to make a less expensive purchase.