It sounds like you will be taking the PADI Tec Deep program. For clarification, the courses are Tec 40, Tec 45, and Tec 50.
Scubapro does have their X-TEK line, but I think most of the products are over-priced and of poor design. This opinion is based on diving with the X-TEK equipment line. I think the largest purchasers of the X-TEK line are recreational divers that like the looks...and I feel that is the market Scubapro was going for with this line.
While I don't personally prefer them, I am not against technical harness designs. Unfortunately the Scubapro X-TEK Form harness is just a very poor design. I can't imagine that any serious technical diver had input into this product. It has fixed shoulder D-Rings, wide shoulders so you cannot add items that fit on standard 2-inch webbing, padding that can't be removed if desired, extra thick D-Rings, etc. Look at an Apeks WTX Harness if you are looking for a technical harness design.
The X-TEK back plates are of high quality. They are priced similar to other major brands (Apeks, Halcyon, etc). You can get a basic back plate from a number of retailers for a lot less, but the Scubapro back plate is of high quality and finish.
The X-TEK Pure harness is just 2-inch webbing and hardware. Priced similar to other major brands (Apeks, Halcyon, etc). The buckle is fine, the webbing is fine, but for some reason Scubapro feels the need to add thick diameter D-rings. Other than to look "beefy", these thicker D-Rings serve no real purpose.
I have used the X-Tek 40-lb donut wing for doubles. My biggest complaint on this is they use their standard Balanced Power Inflator which has two covers on the back side. I have had one of these covers come off the inflator while diving. I think it is a stupid design to put on a technical wing. A standard K-style 45-degree Power Inflator is all that is needed and has less failure points.
There are just too many choices for appropriately designed equipment than to settle for the Scubapro X-Tek line. Other than the back plate, I don't recommend any other item from that product line. If you are looking at major manufacturers, you have Halcyon, Apeks, DiveRite, XDeep, HOG, OMS, OxyCheq, and a few others that you can look at. There was a link to DiveGear Express in an earlier reply. That was for a single tank wing which is not what you asked about. However navigate the category and you will see they have a doubles package for less than $500.