There is nothing wrong with the fox farms stuff, I have used it in the past although I only used it for veg. The thing I didnt like about the FF stuff is, you can get by with the grow/big bloom for veg or tiger bloom/big bloom for flowering but pretty quickly your going to plateau and have to buy the cha ching, beastie bloomz and open sesame in order to get some bigger tastier buds. If you use the PBP line, I think the total line can be used for a lot less with similar results to the FF entire line or better with the PBP line (grow, bloom for soil, liquid karma, silica (I use a different brand now), aqua shield, hydroplex, sweet, cal mag). You can use decent tap water (aerated) with either line of nutes, thats what they are meant for according to both manufacturers.
But honestly if you buy either of the lines and follow the instructions (as well as starting out @ 1/4 to 1/2 strength) and getting familiar with the nutes you should be able to grow some dank with either of them, it boils down to cost and availability. I have access to both for fairly reasonable prices and I went with the botanicare. Pick a line and stick with it for a few grows.