[quote name='drivingatspeed' timestamp='1412593631' post='2570139'] 
Hey guys, thanks for all the input.  Yes - my Ibanez is active and does have roundwounds on it.  I tried both Fender and Squier Precisions at the weekend.  Great sound, but I just couldn't get along with the neck.  Just too chunky, especially after the Ibanez.  I'll try the Jazz again, and with flats 'cos I've never used them.   
 
Yes - I don't really have the 'need' for another bass, but I could do with a back up, and I just fancied getting another one!  I suppose I've come to the conclusion that the Ibanez does really do all the things that I want so I'll probably go for a Squier to keep costs down. 
 
All other recommends welcome though! 
[/quote] if you're itching for a good jazz with a thin neck the American specials have a tenner neck than most and a geddy Lee thinner still