I have played many different sets of flats . Fender 9050's TI Jazz flats , DAD chromes, GHD Brite and Precision Flats , Several Ernie ball Flat sets Including Cobalts, Labella 760's and many others that slip my mind right now. Less thumpy can mean a lot of things. The most articulate flats I have played are the EB Cobalt Flats followed by the GHS Brite Flats. They still thump to a point but not like GHS Precision Flats do. If you want flats that have decent top end but no real Zing then the EB Cobalt flats ot the GHS Brite flats are what you want IMHO. If you want Good highs and deep articulate lows then Possibly GHS Pressure wound strings might be for you . Look up the thread Tangy not Twangy.