I have had two Vigiers for some time now (had three for a few months and eventually sold it to Lukeward2000 to share the love)
Nothing sounds like them to me. They have everything I crave - stability, cutting clarity, beef, a real 'weight' behind the sound, light weight, beautifully shaped and extremely comfortable to play.
As I am sure you are sick of seeing mine by now, I have attached some pics of various Vigiers I have come across on my web travels. The first two are mine....
A Passion S2 (with Marleaux electronics and Roland Vbass pickup) and a Passion S3 Fretless (With U-retro Deluxe pre)
A couple of Nick's #1, a S2 Arpege