I had a dytter, went to time-out, and I have a pro-dytter now.
Time-out is good and easy to use, it' is too thick to fit in your helmet and uses too much batteries ( so does the pro-dytter).
It is a lot better then the classic Dytter.
Do not forget that front-riser dives on high-performance canopies ( stiletto, extreme, velocity, springo,ettc ) can make the thing flatline on landings, which is very uncomfortable.