I’ve had both…Hy:Rd’s are more powerful and modulation is better. They are also self adjusting for pad wear. They feel more substantial and solid than the Juin Tech’s, though the Juin Techs are lighter.
My Hy:Rd’s are excellent. Rear wheel locks up with a single finger and feel/modulation is excellent.
Some advice on set up:-
1/ Get rid of the stock TRP pads – they’re not very good IME. I currently have Uberbike semi-metallic, and they’re great.
2/ Bleeding – bleed them off the bike, in your hand. Use the epicbleedsolutions.com kit and as you’re injecting oil, rotate/twist your wrist/hand to move the caliper around in all orientations – loads more air comes out than a ‘static’ bleed.
3/ Set them up on the bike setting the caliper central and parallel to the disc. Do it in a well lit place with a light background so you look along the disc line and see the pad gaps on both sides. The pistons have some ‘float’ in them and if you set them up on the ‘undo bolt’s, squeeze lever, tighten bolts’ method, you potentially end up with the caliper not quite parallel to the discs, and the pistons push out on the piss slightly.
4/ Use good compressionless cable outers. I use TRP’s own which is great
https://www.merlincycles.com/trp-road-disc-cable-kit-93697.html