Those GGGT experiences would piss me off, too. I don't know about buying online over holding a disc in your hands, but then again, I don't get the privilege of that choice here. I've only had great experiences with their service. They've never been hasty on the phone about getting me exactly what I want. They've even called me to clarify before shipping.
MSt is solid. I've had one disc weigh wrong by 1 gram out of maybe 20. I've also snagged several really good deals. I like being able to select the weight and color better than the + or - rule GGGT goes by. MSt might still do this with custom ink and tye dyes, but I liked it when they had pictures of each disc.
My only beef with Marshall Street is their flight chart. Its laughably bad. It looks like vague guesses forced into a spreadsheet format. My buddy showed me the "updated" version. I wish I could remember some of the funniest revisions, but it didn't look like anything got fixed, just more crammed in, and spillover was moved to a more open area of the spreadsheet.
