I actually built a 4 light 4' frame to hold 2700k T5s, but me being me I overdrive them with a IceCap ballast to get 85w VHO (HO=54w). The 2 TIs where in the middle of the frame. While it accomplished "squareing off" the light footprint it was I admit a failure. Outer rows saw the T5s, inner rows saw the LEDs only some light mixing occured in the mid rows. But that's how we learn.

I believe the dealer in Quebec (Innovative Grows? I seem to remember) is actually TI themselves. The 2 principals of the company are Jeff Darrin (again ? on last name doing this from my memory) and a John something, nice people.

No wavelenght tweeking, they are what they are.
But there is the additional cost of setting up water cooling; pump, rez hoseing etc. Also they are 220v input but you can get a step-up transformer for 110v. They offer one but you can probably find one cheaper yourself.

I will tell you that I do use some supplemental lighting with them and also the other 2 trays (located right below them) that use 1kw PSMH; I have a few incandescent halogen lights that supply lots of far red. I use these as what I call "trigger" lights, they come on 1/2HR before the main lights and stay on another 1/2hr. And they come on again 1/2hr before lights out and stay on for a 1/2hr after the main lights go off. I got this idea from a glasshouse operator near me a few years ago. He said it helps the plant to get going in the beginning and helps with plant stretch by going off last. I've been doing this for a few years now. Just recently I came across this tech paper, that sorta confirms the end use of far red.
OM