There really isn't a "best". But there are some that are highly recommended over others . My personal favorite high end components (in order): DynAudio, any size of them really, 6.5" 240 GT's and System 360 my top favorites Focal Utopia separates, 165W and 165 W3 my favorites. Infinity Kappa Perfect 6.1 CDT Eurosport 6.5" separates Rainbow 6.5" separates MB Quart Q series 6.5" separates JL Audio XR series 6.5" Diamond Audio HEX Series S600 Prices will vary greatly, and depends on where you buy them. The Dynaudios, Focals, and MB Quarts are the most expensive usually, these are around or more than $1000 retail. Kappa Perfects and JL Audio XR's are among the cheapest on this list.
. My personal favorite high end components (in order):