Mmmmm...Dell? Not sure about that..I always thought Dell do something to their machines that don't allow upgrades (I read it somewhere recently and I'll check it out to remind myself what it was).
I know three different people who have baught Evesham machines...all very happy with what they got, service and support etc, plus their pc's seems to be pretty good spec for price.
I spoke about building your own system, and while it's relatively easy, it's often not plain sailing. Actually assembling the parts is usually the easiest bit. The problems start if the thing doesn't power up, for example...troubleshooting and getting disks formatted, partitioned, and software installed may be a little more involved.
I have a half-written guide on PC assembly that I put together for my own use...just to remind me of how it all fixed together! If anyone's interested, I could submit that for people to scrutinise and comment on...I'm sure I've put things in there that others would do differently or that are probably just plain wrong.
If it's of interest, perhaps between us (Muckshifter?) we could provide you (Milan) with some ideas of how to build your own.
Worthwhile you think?