I'll probably create a bunch of posts since I ate so many places, but for Glasgow I highly recommend The Finnieston, a gin cocktail bar with excellent seafood. The bartenders here are really knowledgeable, unlike some other bars I visited in Scotland. The dishes are simple and really do a good job showing off Scotland's amazing seafood. I had coolie for the first time and that was really really creamy and wonderful.

I also highly recommend Stravaigin, which reminded me a little bit of maybe a Scottish version of Chicago's Mott St. or NYC's Momofuku mixed with a British gastropub. Great cocktails, excellent haggis (I was surprised by how much I liked this), and some spicy Asian dishes. I bet their sister restaurant Ubiquitous Chip is also good, but I didn't have a chance to visit.
My overall experience with Glasgow is skip the fine dining. It's not quite there yet in terms of service or sophistication. But maybe I just missed the best restaurants, so correct me if I'm wrong. It's a bit like Scandinavia was 6 years ago when I lived there. Fine dining back then was mostly derivative over-wrought Fresh-ish hotel school stuff you can find anywhere. But then Noma changed everything and I get the feeling that Scotland is going to get some Noma spill-over in the next five years since the climate is so similar. Gastropubs and bars right now seem to be where it's at in Glasgow.