The Koolance 350 is a decent block, but very restrictive to flow. Needs to be in it's own loop. Still not as good as the XT or the HK 3.0.
Cuplex is a euro block, seen talk about it but no proper tests. You find a proper test for it, please post it. Same with the Alpha, not big in the US.
And yea the GTX should be on the list, but it's beat by the top two.
You gonna tell us why your doing this? If doing a review you should just defer to Skinnee and a few others. Don't think you have the equipment or the testing experiance or the reputation they have.