A 'Chillblast' search at PCA threw up the following threads click here - there's one 'Beware Chillblast' thread but not much else negative about them. Which can only be a good thing - try doing a search for Mesh instead! G
Bought a Chillblast Fusion Bullet for my son in December click here It came with a different case and PSU than the "standard" ones I ordered but when I queried it Chillblast assured me they were equivalent or slightly better budget versions than those advertised. They should have asked me first, but agreed to upgrade the PSU at their normal charge if I wanted to buy a better one. In the end I didn't as I can upgrade it myself later when I need to and the warranty is out. Always replied to my emails promptly. Best to phone and check what they are using as possible substitute parts before you order, but otherwise their service was good.
In the end it really depends of if the thing works and does the business
In the fast moving world of buying parts for computer assembly I can fully understand the dilemma of a manufacturer trying to decide if he should buy an alternative (but equal or better) part if the one he has specified is on back order or decide to disappoint a buyer with late delivery
In most cases the substituted part will do the business otherwise the maker wouldn't do it
At the end of the day I think it's the manufacturer's name and reputation that you need to consider
If the supplier builds good computers and has a good reputation it really is not worth getting upset if he has to substitute a component in order to get your computer to you on time
Build quality seemed fine. I had to fit the graphics card myself as Chillblast said it was better that way to avoid damage in transit. The graphics card came in its original unopened box and was no problem to fit. No problems so far.....