Thumbs are worth the price if that's the tone you want. Nothing, and I repeat nothing sounds like a Thumb. It's just up to you if that's what you want. I've got a Thumb 5 BO, a Corvette Proline, and a Streamer Stage II. They're all great quality basses, yet they all sound a little different from each other. To me, a Thumb is all about midrange. It cuts through like no other bass out there. It also has a very unique slap tone that some love and others hate. In a 6-string, both the 'Vette and the Thumb will be quite heavy. The 'Vette will balance better. Most Warwicks feel similar so that's really not an issue, IMO, unless you're talking older 'Wicks vs. newer ones. The older ones with wenge necks usually have a thinner neck profile. Wenge feels different than Ovangkol. It has more of a course grain that some people don't like. So really you just need to hear some Thumbs vs. 'Vettes. If you want that tone you'll need a Thumb. Everything else is fairly similar.