Single cuts understandably divide opinion as most of them look revolting.
However, I became intrigued after trying a few Fodera imperials - to my eye the Imperial shape manages to play against type and look extremely cool. Pretty much every other single cut shape makes me want to throw up. Since I couldn't afford a new Imperial, I got an Adamovic Halo which is a rare bass that pulls off a good look for a single cut in my view.
[url="http://www.adamovic.nl/2basses/Custom/Ha.htm"]http://www.adamovic....s/Custom/Ha.htm[/url]
Feel wise I would say that a good single cut gives the neck a different feel, especially in the upper register compared to bolt ons and neck-throughs. The whole bass feels 'fused' together and certainly on the Imperials I've tried (and my Adamovic) gives terrific sustain and response, especially in the upper registers.
That doesn't mean that I don't use bolt ons (I have a few bolt ons that are just amazing, esp my stingray) but I certainly prefer chording, playing complicated upper register stuff etc more on the Adamovic, which is by far the most playable bass I own.