Overall, I'd say hardcover. But that's a function of quality and pagecount.
Psionics Handbook is pretty damn good, but has too low pagecount to merit hardcover - I want at least 192 pages if it's in hardcover. Otherwise it feels like a third of the price goes to the cover.
When I bought GURPS Basic, the choice was between softcover and hardcover. The hardcover costed $5 more. No argue there, I picked the hardcover.
Psionics Handbook is pretty damn good, but has too low pagecount to merit hardcover - I want at least 192 pages if it's in hardcover. Otherwise it feels like a third of the price goes to the cover.
When I bought GURPS Basic, the choice was between softcover and hardcover. The hardcover costed $5 more. No argue there, I picked the hardcover.