I really don't think that it's simply a case of stating that a L5/6/7 is a "waste of money", nor asserting that someone is foolish for buying one. Because regardless of diminishing returns, it still remains a fact that a Level 5 trainer is better than a Level 4, and so on... stating the obvious I guess, but some people seem to be putting out a blanket statement that "more than a level 4 is not worth it". Not a fact.
The key here is: is it financially viable for your team?
For me, absolutely. I have a L6 trainer - have had for quite a while. For me, that's a reasonable cost. There are others in the JBBL who swear by L7. And if I could afford it, then I'd probably get one too.
For my trainees (my two key guys I am training for *my* team, not to sell), I want to get them to the point I envisage. For me: a L4 or even L5 trainer may well "not be worth it".
There is no spoon.
http://with-malice.com/ - The half-crazed ramblings of a Lakers fanatic in Japan