I wouldn't say he's my favorite but he was also at the forefront or involved in many significant jazz movements: bop, cool, hardbop. Helping to make Coltrane a big name. It's hard to ignore those kinds of facts. Yes, he is well know to the non jazz public and that is so because of the Columbia machine. While I don't care much of the post 65 material, the stuff with Gil Evans, the 50s material and the early 60s is very damn good. KOB is classic, etc., etc. That's why he's big.