I make videogames for a living & I need I've been using PC Specialist to supply my work PCs for almost a decade now I just got my 4th. I've had off-the-shelf PCs from most big names and though they're fine, it's hard to get specific performance components or prioritise what aspects of the machine matter for your use cases without modifying it after you buy it, a process I always find stressful as it's super easy to buy incompatible parts. I've had custom PCs from DELL they're not much better - also they seem to be geared up to only treat their big corporate customers well. PC specialist offer completely custom builds, I can prioritise exactly which aspects of the machine I want to, and I know that if a component is listed in a drop down then it will definitely work. If you need advice then their business support people are super helpful, friendly, & knowledgeable too. I wouldn't go anywhere else for a PC.