Do you mean Clay Delay?
If so, I've had 4 or 5 of them over the years (at least 3 wireless ones, and at least 2 wired ones). Currently have the wireless skeet setup. I had some issues with the wireless ones in the past, but the issues were corrected promptly and courteously. My current setup has been flawless. They were also able to custom tune the "human lag" in mine for me. They are also pretty local to me (1.5hr away) so if I was ever in a bind, it could drop it off with them for service.
The ONLY thing the ventriloquist has over the clay delay is the "skeet sequence" which allows you to shoot a full round of skeet without pressing any buttons. This has never been an issue for me b/c I put the transmitter right next to my shell pouch, and hit the button as my hand goes back to grab another shell. I only load 1 shell at a time for skeet, but I could see where the auto-sequence could be an asset if you're a "two-holer" though.
If you're never going to use the voice release on the skeet field, they are otherwise identical, but the Clay Delay is about 1/2 the price for a comparable setup. You can even order the Clay Delay with auto-rearm, which would be useful for trap as you wouldn't have to push the button every time. I've know quite a few people including a friend of mine who had the ventriloquist, sold it, and bought a clay delay to replace it.
As I've said, I've had the wired and wireless versions. Actually using either isn't much different. But unrolling and re-rolling the wire every time you want to use it gets pretty old. If you can, spring for the wireless version, if not, the wired one isn't the end of the world, just a little bit of a pain.