Both very well made instruments that will sound great, but also very different. For me:
Yamaha - great passive sound, more 'Fendery'. P/J combined does not sound like a Jazz for me (734A). Neck profile will be moderately sized.
G&L - bright, punchy and a bit more 'Musicman' in presence, but won't sound like a Stingray. Neck profile is chonky. More controls but that doesn't mean massively different sounds.
Personally i'd get on with both of them, but for what you described i'd go with the Yamaha.