I like Hawes a lot. As sideman (one session that comes to mind is the Bud Shank with Bill Perkins one which is actually half of Bud Shank & Shorty Rogers on Pacific Jazz) or leader.
Just last night I was listening to Early Years, a new compilation of trios and quartets recorded in live and studio settings between 51 and 55, predating his first recordings for Contemporary. I have only heard the trio live sessions so far, but I liked them a lot. They were recorded in 51 and 52 at The Haig and a Surf Club with Joe Mondragon and Shelly Manne, Lawrence Marable and Larry Bunker. Sound's so so, but not bad considering they're club recordings.
What I don't know is the source of that material, if it's been issued before and where. I must admit I still haven't read the liners. But for Hampton Hawes fans I'd recommend it. It's an interesting glance at his, errr ... Early Years.