Cheers - yeah I liked the white radiators as soon as I saw them... I actually had to paint the XPSC one because the white it comes as is matt (almost like a primer actually) and didn't match the more satin finish of the alphacool. Got some decent satin white spray paint and problem solved!
On the first iteration I tried (before I added the 90 degree fittings on the CPU block), the tube couldn't get low enough to the board for a straight run to the rad at the front so I had to put a small kink to line things up. Wasn't very happy with that!
However, after I changed my plan and went with the 90 degree fittings, I just had to use a small G1/4 extender under the 90's on the CPU block and it then lined up very nicely height wise off the motherboard and the front rad (and conveniently, also with the outlet of the 140mm rad using the same size g1/4 extender). It looks pretty spot on regarding being parallel with the case, certainly as far as you can see it's a totally straight shot. Could be off by a mm or two perhaps but over that distance it's hard to tell.
Given this is my first build, I don't really have any frame of reference to compare the Evolv to anything else... so hard for me to say really! It is naturally going to be a bit tight compared to a full size tower case I suppose, but it is very well laid out in my humble and un-informed opinion. I didn't struggle with any of the fittings personally, but I guess if I had another larger rad up top it would have got a bit more claustrophobic.