Which one to use... depends on several things. Light is the first thing. Do you just have the standard strip light that comes on the tank or have you up graded? If its just the standard light might not need any ferts other then what the fish supply. I need some more info to advise further. Info I could use... How much light does the tank have or will have? What kind of Substrate? Water out of tap GH, KH, PH? If you do co2 then your KH PH values will give you your co2 level.
Plants for a 10 gallon. Hmm... in small tanks I like to use alot of different crypts just make sure they are not something like crypt spirials as they will get too big so with something like one of the colors of Wendtii Red, Geen, etc. I also use dwarf sag., micro sword, glosso, java moss, willow moss, and java fern, just to name a few.