[DonV]

Everyone is correct on their call on the tilted element transducers. I've got the Airmar 20 degree and it works great. Had an issue with the cable from the original unit.....no questions asked by Airmar, period, they replaced the unit!!! Great customer service.
Form the "for it's worth department".....this is where you do not skimp on the purchase/install. If you are going to the effort and expense of drilling a hole in your hull to install the transducer spend the extra $$$$ and do it right. I've got the 1000w B164 and am very satisfied!!! Now that I have this unit, I will NEVER go back to a transom mount for any of my boats!!!!