Moving from Soft to Hard Tubing in Watercooling Loop

Hi all,

Looking for thoughts, comments, and experiences..

I am considering changing out my water tubing from flex PVC to hard tubing. No real reason other than to gain some experience working with it, and I feel like spending some time to improve the look of my PC internals (I'll probably look at a modular PSU and custom cables & sleeving next).

I think that I could go down 2 routes - clear PETG with a dyed coolant, or powdercoated copper. I don't have the tools for either at the moment (i.e. a pipe bender or heat-gun) and the cost would be similar.

Copper:
Pro: Unusual
Pro: Can powdercoat to any colour - probably matt red or matt black
Con: Possibly dump heat into the PC (refer to Linus Tech Tips whole room water cooling - although I would use a magnitude less copper than those fools)
Con: Pipe corners might be a little less inflexible in their design using the pipe bender

PETG:
Pro: Might be more flexible doing tighter curves, or complex shapes due to being easier to work with
Pro: Can dye the coolant using vibrant colours and flashy appearances.. By case colour scheme is quite muted though.
Con: It's fairly common
Con: It's harder to get - if I stuff it up, I have to wait for PCCG to send me more.. Copper is available at Bunnings.

An example of both (plus a pic of my PC before I spent more time tidying up the cables)
http://imgur.com/a/Tikoj