Aerodyne Bass - AJB 58 (Japan) vs AJB 65(US version) Bridge difference

Hello - I am considering purchasing an Aerodyne Bass from a Japanese retailer but first could use some help. I've read through the current threads and still have a few questions (I'm a new player so please be patient ;>):

1) what is the difference in the bridge found on the US model versus the Japan non export/pickguard model (AJB 58)?
The AJB 65 has a "Bridge TP-AJB Special" versus the "machine" version on the AJB 58..but I don't know what this means..

2) is there a difference in playability between the two models?

3) What is the color of the pickguard - is it black or chrome?

4) Is there a big difference in the reliability among the Japanese online retailers -- do you guys use one over another for any particular reason?

5) Should i just buy US version from my local sam ash retailer or hold out for the non export model??

6)any suggestions on a hard case and amp (small for practice)?

thanks for your help - it's much appreciated

 

thanks!

 

is there an issue with electrical current - using japan non export guitar with us electrical standards?