The only test kits that you really need for a planted tank is PH,KH,GH,P04,N03. That is why I only buy individual test kits because some of the large master kits have test that are not needed.
The Red Sea Nitrate and Phosphate Kits are pretty good.
I have used both of these. I still use the PO4, but I gave up on the NO3 - too much variability for any accuracy. Some folks have been happy with it. As they say, 'your mileage may vary.'