It appears that Upton is constantly improving its finishes. The basses just seem to look nicer and nicer.
When I bought my Upton I just began looking at basses on various sites like Upton, Lemur and on TB. When I found one I liked, I emailed a link to Upton. This was only to give them a general range. Beyond that, I trusted them to use their best judgement.
Keep in mind that the bass is just a tool. The beauty of it is in the music you make with it.

I'm really working on that part.