When there are so many good instruments available these days I don’t have a problem with looks being part of your purchase choice. If you can afford the one you like the look of and it plays and sounds the way you want then why not. I own basses that I don’t care for the look of but were within my budget and play and sound as I want them to. Of the two you mention, I prefer the Precision over the Jazz. I don’t like offset bodies so I’ll never buy a Jazz type bass. I can get their versatility in other instruments.