We wrote about this on the above thread. I have not tried any of the cros solution but researched it extensively. The new croslink for phonak is supposed to be a big step forward when used with the spice aids. However, for the new spice aids the only feature anybody and everybody claim to help them hear in noise is stereozoom and on a lesser note the zoom control feature. So pretty much stereozoom is the only feature that makes this aid even worth considering over the oticon agil pro when it comes to hearing in noise.
The problem is the cross link does not support stereozoom. Stereozoom is when the microphones on both aids are used in tandem to create a beam form and the resulting combined sound is sent to both aids.
In the end this means that cross link is only really good for quiet situations. This is despite all the carefully worded advertisement.
Although not useful in noise it can be useful in many other situation such as when you are in the car and the person you need to hear is on your deaf side. Or for less challenging noisy situations.
I theorized that for somebody hell bent on getting the absolutely the best speech in noise performance, then the best solution is to get 2 fully functional spice aids. The aid on the dead ear would be on all the time but not really heard until the zoom control or stereozoom features are used. This is possibly a more expensive option and I doubt if any audi will go along with this.
I strongly suggest you test your aid with a Oticon Agil Pro aid. This is the best SINGLE AID solution for hearing in noise. 2 fully functional spice aids is the best solution for hearing in noise of all aids only because of stereozoom.
I would test the oticon agil pro vs the phonak spice aid with croslink. see what the cost is between 2 spice aids vs a spice with croslink (please let us know). and maybe see if you audi is open to letting you trial 2 fully functional spice aids.