Eddie Lang is my all-time favourite guitarist, his tone & eloquence have never been matched IMO, & his accomplishments are all the more remarkable considering he pretty much invented jazz guitar - I know Django gets all the attention, but to my ears he doesn't have anywhere near the appeal of Lang, he's too florid, Lang is more understated - besides which, I reckon Joe Venuti is way more listenable than Grapelli; buy the JSP boxset of Lang/Venuti & give yourself a treat!