I have recently purchased this PC and bought it mainly for the fact it's compact, all in one yet is a decent spec.
Ok so the spec of the PC isn't AMAZING for the money but then again it IS Sony, so you are paying for the brand as well.
First impression is that it has a beautiful design, looks so smart on my desk, but we don't buy PC's for looks right?
It's performace so far has been fantastic. It's quick to load up, runs smoothly and hasn't crashed once even with everything i install on it (at the same time).

One down side would be the lack of VGA socket for an extra screen - which means forking out £50 in order to hook up another monitor via USB. Of course this only applies to those who use two screens, if your happy with just the one then theres no complaints, It has a sharp 21" widescreen!

Like any new computer bought in a package, comes the downside of having lots of programs already installed. It seems Sony have jam-packed it with Sony VAIO software such as:
-VAIO Music Box
-SonicStage Mastering Studio 2.5
-VAIO Movie Story
-VAIO Media Plus
-VAIO Recovery Utility 2.6

I'm yet to try these, as i tend to do my research on programs i want rather than just use what i got.

The computer runs almost silently! I can't hear it at all - my external hardrives make more noise than the PC itself.
A plus side for the girlies out there - it comes in a lovely light pink finish as well as having very 'nail-friendly' keys on the keyboard!

The SONY VAIO VGC-JS2E retails at over £1000 but can be bought from play.com for only £850 with free p&p. Bargain!