FYI, I like the Hagen Marina ones I bought. I got mine from Ken's Fish online...
Beware, as the two silk plants my local Petsmart stocks (looks like Amazon swords in either green or red) have metal in them (will rust and cause illness/death to fish.) Disappointingly, one of my smaller "Betta" plants from Petco wound up having the same. I caught that and tore the plant apart and remade it with a glue gun, sans wire.
Some members do their own silk plants from craft shop stock when they find some that has no wire...you might search for related threads here. I haven't tried that yet, but after reading that some do, I'm more apt to try it if I see some I like.