These systems are right up my alley. I'm the target customer. I do drills with doughnuts and I like electronic gadgets. Here is my take:
1) I almost pulled the trigger on projectionprobilliards last year. I thought its price of $250 was very fair for the computer and software. The cost of the projector was one holdback. It was about 500 new, or about 300 used on eBay. I would have gone used, putting the price at 550. Add in mounting hardware, cables, mouse, keyboard, and lets call it 600. That is a steep price for a doughnut replacement. I just checked eBay to see if the used projectors are less, and they are still in the 300 range for the one recommended at projectionprobilliards.
2) Early adopter. I did not want to be an early adopter. I was one for the last two electronic items for the pool market: The gen 1 QMD stroke trainer, and the gen 1 digi-cue stroke trainer. I bought both. Both sucked. I said I'm not going to be the sucker again for gen 1 pool electronic items.
3) I checked every single youtube and webpage of projection pro billiards last year (and refreshed my memory since this thread came out). I did the same for the new icatraining system. From the videos, the main difference I see is the icatraining system puts a circle under the ball (which I like a lot). The projection pro billiards system only puts a number under the ball (no circle). This would lead to less repeatable ball placement it seems.
The Ica system also allows you to draw lines, tangent lines, follow lines, add text, etc. Just like the old cuetable diagramming tool did. While I think that would be super useful for an instructor to generate new material for his students, I think it would be limited use for a student who wants to do a WWYD thread from here, or break a rack and mark the balls to play the same layout over and over.
4) The user interface on both systems seems the same. Its a menu driven system. I don't know if that is a function of the computer hardware they both share, or the software each respective developer wrote.
5) I was also worried about the projection pro billiards system last year, that it is 1 programmer working on it, and he may decide to quit. Now, with the ICA system, its the same situation. One programmer, and one instructor. These guys might realize there is only a handful of people that will buy any of these systems, and not develop further, because its not worth their time.
6. That brings us back to the ICA and cost. It is 600, plus 300 for a used projector on eBay. Plus 25 for the mounting hardware (it comes with the keyboard/mouse/cables). That takes us to 950. That is a tough pill to swallow, when 550 looks like it will do almost the same thing.
7. Now that we have competition, I hope they will both improve their systems.
8. Oh, and content. The projectionprobilliards you can buy the instruction add-on from the instructor for ICA for just $30. So you will get his drills anyway. *Edit, I just checked the projectionprobilliards site, and now I can't find this add-on. Either I lost where it is, or the instructor blocked it since he has his own product now. 100% it was there 3 days ago.
YMMV