Quoted from Yelobird:Thanks I value your input though its difficult with the other certain opinions like Vireland and 1.0 boards I really have no idea what those are. To say never had an issue makes me feel a bit more comfortable with the 7.5 setup as I have not had any issues and parking $800 in a drawer for "what if" seems like a poor investment.
It isn’t that the 7.5v boards are any better then 5v. Whether 5v or 7.5v the important thing is that they are buffered. 2.0 replaces the daisy chain wiring setup which is there whether the boards are 5vbor 7,5v.