A friend of mine is building a new house (well, it's triple the combined size of a pair of semis lol) and is planning to run Cat5e throughout it as he used to own an I.T firm in the 90's and has a dozen or so miles of Cat5e leftover.  I feel he should be going Cat6/Cat6A instead for future proofing, am I right? and if so how do I go about arguing that?
Thanks.
	
		
			
		
		
	
				
			Thanks.
	
 

 but that costs a lot.