What
@vickster said...that two for two vickster
At 6' with long legs you'll likely want to look at 58 frame. Then, perhaps...given your transition from a hybrid...consider an upright, kinda sportive type road bike frame. Race frames are generally low at the front, compact, aggressive and shaped to tuck the rider down, provide stiffness to the frame and encourage the use of slightly different muscles....apparently.
What all that means is that racey frames may give you a sore neck (as you look up from the low front end) or a creaky back.Take a look a a few styles of frame before choosing a manufacturer.
PS, I'm pretty sure a triple will be more readily available on a more upright frame... although I never struggle on a compact double. Actually, that's a fib, I always struggle on the hills...but not because I run out of gears...just that I run out of talent.