Can anyone help comparing the accuracy of these three (TruTrack, ProTee, GSA PX5)?

Looking to pull the trigger any day but its very hard to cut through the marketing BS and compare the real data.

Background - Looking to use the sim as a teaching aid with very good golfers. Need to be able to hit draws, cuts, knock downs, lobs, etc. Ie more of a tool versus a game.

I understand each has limitations when compared to the GSA CX5 5 camera system that is ultra accurate for club and ball measurements but want to quantify that difference and understand what I am giving up or not in accuracy for cost.

Understand that all three calculate club head measurements and ball speed, path, LA but ALL THREE also estimate ball spin and spin axis. Curious to see if anyone is more accurate with ball spin estimates.

Also understand that TruGolf uses E6 software and the other two RedChain. Just looking for inputs on this thread on sensor measurement accuracy and error rather than software or pricing comparisons.

Any help is appreciated.

TruGolf TruTrack:
* http://www.trugolf.com/
* New Technique Prestige model is shipping next week- small portable sim in a box
* Convenient that all components are prepacked and easy to setup but the trade off is portable frame / netting with very small sim screen and components are not tailored or optimized for your specific setting (perhaps also tradeoff on accuracy but can't get any data to compare)
* TruTrack looks like its a sensor matt for club head measurements and sonic triangulation for ball path, speed, LA when it hits the screen.
* Ball spin and spin axis is estimated (same for all three options)
* From the picture it looks like there are not many sensors on the sensor matt (concern) compared with the GSA PX2 96 sensor insert (same one used in GSA PX5) but it may be that the ball track sensors are removed since ball track is done via sonic triangulation?
* For this kind of money it would be a shame to find out that the sensors are similar to DD or P3Pro (not bad as long you understand what you are getting ahead of time but with TruGolf no data is offered just "very accurate and independently tested" so their marketing the high accuracy but not providing the data (concern)
* Need to hit off the same spot on the sensor matt and believe you need a shot to hit the screen to register (curious how lob, flop, and sand shots register then?)

GSA PX5
* http://www.golfsimfactory.com/ElectronicSensors.htm
* Looks like the PX5 is their PX2 96 sensor matt for club head measurements and hCam and vCam for both launch angle, ball path, and speed.
* Spin is estimated
* The camera for ball path, spin, and launch angle are ~ 5 feet from screen so in theory should have more resolution / accuracy versus a similar system that measures right after the ball position?
* I know high speed cameras are very accurate since they don't sample - they measure exactly what the see
* Curious on the accuracy compared to sonic triangulation?
* Martin does publish the 96 sensors for PX2 matt and accuracy of club head measurements
* with the two camera system you can choose to hit anywhere off the sensor matt (ie sand, rough inserts) and both cameras pick up ball measuremetns but you just give up club head measuremetns for swing analysis when you hit those shots if you choose (can still hit them off the sensor matt if you choose)

ProTee V2.0
* http://www.protee-united.com/
* DJ (marketer?) and Martin (inventor / engineer?) went seperate paths and DJ is selling single unit through Protee
* Similar to TruGolf hard to get your hands on real data for accuracy
* As you would expect it looks very similar to GSA products but ...
* Don't know for sure but it looks like the GSA PX2 sensor matt but heard the launch angle camera is like a web cam. Believe this is fairly close to after you hit the shot versus GSA further away?
* This is not fact but I would guess it is a PX2 matt with a web cam
* Believe the ball path / speed sensors are also in the same matt right after you hit it so in theory probably has less resolution / accuracy from a similar system that has these sensors farther away?
* TruGolf says the Trutrack unit in the Technique models is the same unit in the high end fully enclosed systems (so if you are familiar wtih their newport, signature, etc its the same technology sensors)