I had a computer from Mesh that cost ~£1,600 about 4 years ago. It was always loud but it eventually got to the point where it would sound like a cement mixer. After looking in the case and looking at various forums it became clear that the chipset fan was a known issue on this particular mobo and normally had to be replaced after a year or so. I contacted Mesh and asked them for a replacement fan. I was first told that because the mobo would have to be taken out to replace the fan (to access the retaining clips at the back of the board) I would have to send the whole computer back to Mesh. Was never going to do that and after much hassling they agreed to send me a fan that I could fit myself which was great except it never arrived. Emailed a few times but this was never resolved.
Would keep the fan going by topping it up with sewing machine oil but eventually (a couple of months outside the Mesh warranty) the mobo packed up. Decided I could do a better job than Mesh at building a computer and a few hours of research and £500 later I had a machine that runs quietly and fast and for no more than 1/2 the cost of a similar system from someone like Mesh.
Build your own! It's fun and saves you money!