Unbelievably good. Seriously. The main chap, Mark, has been personally corresponding with me by email and phone over about the last two weeks getting my loupes right. I can't really explain here just how much effort he has put in for me personally. They don't do a load of advertisements and marketing, preferring word of mouth. And I will certainly will be using them for the rest of my career. If your in doubt, you can send them an email or phonecall, always really friendly and willing to give you their time (and never pressuring). Really impressive.