:)I have several calls Rick made, many of them early in his career and some of the newer ones. I have about 100 custom calls and dozens of production. I take about 20 yotes per year on average and call some that I miss or screw up and for other people. I say these things to offer back up to my opinion not to brag.
Ricks calls are as good as any on the market, any sound that can't be made with his calls cant be made with any. Of course YOU must practice, listen to sounds, try new things, I think I taught Rick to "trill" his tongue to make a very different sound.
I would say, get a: peeper or magnum peeper call, two open reeds, one higher pitch one lower and a closed reed big raspy one. I love the Peeper calls and use them a LOT.
Carl