I've got two 1988 Streamer Stage I's, fretted and fretless, and a 2001 Limited Edition bolt-on Thumb (bubinga body, ebony fretboard).
The Thumb is the heaviest and is rock solid. Sounds fabulous too and looks gorgeous. I bought it brand new, as a treat for myself.
The Stage I's are just amazing. They both hang better than the Thumb and have slim necks and are light, but solid. The fretted is my main gigging bass now. The Thumb used to be. I bought both of them in the last two years at good prices.
Though the neck on the Thumb is deeper I still don't have a problem playing it and I haven't got the biggest of hands.
Warwicks are so well made and reliable, and I think they look great, the Streamer especially.
Take advantage of second hand Warwicks being cheaper at the moment. Find one; buy it! Or find three and buy them.