I hear you Rick.
When you look at that multiple-element Airmar monster and compare it to the plastic transom mounts that we are all used to calling "transducers"...
It amounts to the difference between a toy and a tool. (which, by the way reminds me of my partners... )
Just wait until you hook that thing up! Make sure you get into the "Installation" menu on your HDS 10 and choose the B164 by name. Your unit will recognize that it is now connected to a 1000 watt transducer and will automatically step-up the output from the 600 watt default output.
The detail you will get from this multi-element transducer has to be seen to be believed! You will love it!