Crc Clc ??????

CLC...

Personally, I prefer a CLC power supply, I played with both and always got better results from the CLC. However, the L part is going to be much more expensive than the R part.

With respect to the question of the transistors being mounted close together, it kind of depends on your heatsinks ability to 'spread' the heat...if the mounting surface is very thick and the heat distribution is good, you probably don't have to worry as much about whether the transistors are perfectly spaced.

It can't hurt to spread them, but I have predrilled and tapped heatsinks, so I put mine in the obvious, convenient spots...not evenly spaced...

HTH

Stuart