I don't think you can go wrong with picking either one. There both great starter stringing machines. But if i had to choose by design, i would go with the Progression 200. I just don't like the way the Klipper looks like. Both stringers are very similar. The only difference that i would take into consideration would be the clamps.
Racquet : TGK238.1 2X / Head YTPP 1X
Strings : BHB7 17G 49lb / LUX 4g Rough 17G