I have both, Cateye Astrale 8 and the wireless.

The Cateye 8 has cadence and reads off the rear wheel which is useful on a trainer.
No problems with this computer. Instructions are messy! You will figure it out but it is not for ADD challenged people.

The wireless has caused me problems when set in automatic mode for average speed. Do not know if it is caused by RF interference or just a faulty device. My LBS exchanged it twice and it still acts up. I gave up on it and use it just for speed, distance, time in manual mode. I would not buy another one.
(see above)