I am looking at adding a transom mount 50/200 transducer to my TZT2 for bottom fishing on the east coast of Florida (Sebastian/FT Pierce and the Keys).  I currently have a B175HW running off of a Humminbird Helix that I believe covers the water column and suspended fish.  Looks like my choices are 525T-PWD (P66) ($150ish), TM258 ($800ish), and TM260 ($1100ish).  I will normally be fishing in less that 300', but may want to reach out to 600' occasionally. 
I am trying to rationalize the spending of the additional $$ for either the TM258 or TM260. Any one with first hand experience or other recommendations? As I understand it, I would only get Bottom Discrimination on the cheaper P66.
Thank you
				
			I am trying to rationalize the spending of the additional $$ for either the TM258 or TM260. Any one with first hand experience or other recommendations? As I understand it, I would only get Bottom Discrimination on the cheaper P66.
Thank you
 
	
 
 
		