which hardline petg Fittings? and rigid tube install questions

I'm getting ready to do a PETG hardline tubing for my computer soon. I can't decide on the fittings, but I do know I want 16mm. I can't decide on the EK-HDC or alphacool HT or alphacool Eiszapfen fittings. Has anyone used any of these fittings to comment on the quality? The first 2 i listed look very similar. They have a simple design with a flat top. The eiszapfen have a beveled edge and look nicer. from what I see a lot of people get EK or bitspower hardline line compression fittings. I have heard of lots of stuff from alphacool, but not a lot on their hardline fittings.

Second question. I've watch some videos on measuring and bending the tubing, but I can't see how the tubing is actually installed. My ? is if the tubing is rigid, how do you get it between 2 fittings if they are perpindicular (one vertical and one horizontal)? It seems as if pushing the tube into one fitting would not allow alignment to the other since the tube is rigid. Is the tubing just flexible enough to do so? What about 2 fittings facing each other? The rigid tube has to get inside both those fittings. How do you get the tubing inside both without physically spreading the two fitting locations apart?

The fittings from the big names are all roughly the same in quality. It's going to come down to the look you like, and the price.

My one note would be try to get your tubing from the same manufacturer as your fittings. The sizes have some small variance, and when you're dealing with hard tubing, it's gotta match very closely.

On your second question, it's a PITA. You basically will be physically separating the components in some cases. You need to make sure your plan for bends and such includes making sure it's something you can actually assemble. Keep your rad/pump/block mounts loose so there's some give when you're getting everything aligned and seated, then tighten everything down.

You say it's a PITA in some cases. Is it easier to assemble with petg since it's a little more flexible? is it worth it in the end vs soft tubing?

Hardline tubing looks nice, but I agree it sucks big time to work with. I will not be doing it on my next watercooled build. Just is not worth the hassle.

Well, I think it looks pretty nice. Some people say it's not that hard once you get the hang of it. I bought a nice bending kit that can measure all the bends outs so that will make it easier I think. If all else fails I'll just sell all the fittings and put it toward soft tube fittings.