Advices needed on a zx5 fs

[shannow95]

Hello ,
I reacently bought a RB5 witch is a disaster on our indoor track (cold polished oily hall vinyl ...) But it's really a shame because I really liked the RB5 conception , the way it is built and the metric screws quality ...

Anyway the conclusion is that I have to go back to 4wd at least on that track ... so it means going back to the B44 that I'm not very fond of ... the driving is ok , I don't think I have the skills yet to really notice a diference between the two . But I was wondering If the zx5 fs was as well built as the RB5 ,it looks nicer than the b44 just on pictures (more accesible) .
It is a bit childish a guess but I really have that sensation on the b44 of "oh no not that machine ..." it just enoys me ... just the silly 1/32" screws is already a heavy burden for me ... to set the motor spur is anoying as well ... it's just not a very accesible machine ...
As I have the RB5 many parts would be compatible I guess and I thought would it be a good idea to go full kyosho for both 2wd and 4wd ?
What are your thoughts on this ? Should I try and buy the kyosho and then sell later one the one I don't like , so that I can compare them ?

thanks in advance