I would have figured that this topic would have been asked a lot in this forum but I didn't find anything recently (maybe I didn't search well enough). In any event, I was just wondering if there were good alternatives to lacquer for spraying guitars? I've used several different nitro lacquers in the past (McFadden, Constantine's, Behlen), and I also tried KTM-9 from LMII. I just wasn't sure what all else was out there. I've seen a few people mention the use of urethane - are there specific brands that work well for guitars? I know some of those finishes (auto paints, anyway) are super expensive. I'm also interested in the tradeoffs/benefits of using finishes other than lacquer. I don't believe most urethane finishes burn in, so are there special considerations for buffing so you don't end up with witness lines? I know a lot of those catalyzed finishes set really fast, which would be a real nice bonus, being able to sand/buff much quicker. My guess is that those finishes also build much quicker than lacquer (i.e. fewer coats required). Are grain fillers still required? Other benefits/disadvantates I should consider?