I love mine! Perfect for my type of diving. Easy to use, easy to see, easy to watch students, no issues what so ever. Its big the first time or 2 you wear it.....like anything, you get used to it and dont even notice it. To me, its my favorite investment.
As for a built in compass...I wouldnt want it built in, or a digital compass in any computer available right now. In the current available ones, you have a small window of viewing the compass(15-30 seconds) before it switches back to the normal screen, they also dont provide you with your depth when in compass mode(big problem to me) Oceanic is coming out with on that will show the depth....but for me, I dont want to press a few buttons to turn on a digital compass, then every 15-30 seconds do it again. If you use compasses, you know how easy it is to go off course by 1 degree...and miss your target completely. Now add in worrying about your depth, pressing buttons, and then trying to keep the computer level( yes, they too like a traditional compass have a tilt factor)....I have my compass on a retractor on my chest d-ring...pull it out when needed, and out of the way when not needed.
If you havent tried it, try it...if not go for it. I highly doubt you will be dissappointed. Most people that ACTUALLY OWN THEM and arent tech divers, actually love them. Dont take the negatives from those that dont own them or do different diving than you as what everyone thinks
At the same time, dont take my view either....make your own
Hope that helps