BRS sold my hanna phospate checker 713. Worth to trade for 716?

[godzen]

So I bought a brand new hanna phosphate checker 713 from BRS. However, it appears a lot of people agree the 716 phosphorus checker is more accurate. Now, I know there are a lot of people in this hobby that places too much time into little details that are irrelevant in the big picture of keeping a reef tank. My question, is this one of them? Is it worth it for me to rma and get the 716 checker and waste my a new box of 25 testing reagent or is this phosphate checker good enough for this hobby?? Please let me know.

 

[estanoche]

is it worth the return shipping??? that'd be my question to myself....