Re: How to Develop a soloing style....
Don't limit yourself to just your three favorite pickers. Listen to as many different guitarists as you can, in as many different genres as you can. I think it's especially helpful to check out players and music from outside your comfort zone. Case in point, Zakk Wylde and John 5. Both players are expert chicken and hybrid pickers (fingers and pick). Both techniques are more traditionally used in country guitar, but they both use them to play metal rhythms and leads, and it definitely helps to define their respective styles.
Another suggestion I hear a lot is to listen to other instrument's solos. This has definitely helped me, as I listen to a lot of bluegrass and country, so I hear a lot of fiddle solos, banjo solos, pedal steel solos, etc. Wind instruments are great too, and even piano/organ can help in this regard. I'm normally against learning licks verbatim, preferring instead to develop my own, but this is one instance where I find it really helpful. I've learned a lot of mandolin, banjo and fiddle licks on the guitar, and it has definitely affected the way I approach solos.
Here are some players that have helped to shape my own style, maybe one or two will spark something for you, I'll list the non-guitar players separately with their respective instruments:
Warren Haynes
Eric Clapton
Vince Gill
Bryan Sutton
Norman Blake
Jimmy Herring
Albert Lee
Vince Herman
Lowell George
Zakk Wylde
Paul Barrerre
Tyler Grant
Mark Knopfler
Chet Atkins (check out his CD with Mark Knopfler!)
James Burton
B.B. King
Tony Rice
Jerry Garcia
Santana
T-Bone Burnett
Darrell Scott
Guthrie Trapp
Fiddle:
Sam Bush
Stuart Duncan (there's a fiddle solo at 2:30 that is absolutely mind blowing, and you wouldn't know it was a fiddle if you weren't looking at him playing it, it sounds like an electric guitar)
Casey Driessan
Jason Carter
Banjo
Bela Fleck
Andy Thorn
Mark Vann - this guy is one of my favorite soloists of all time, so he deserves two videos (
http://www.youtube.com/watch?v=-hI72A3Bgbo this video was his last performance before succumbing to skin cancer almost exactly 10 years ago. Another great video:
http://www.youtube.com/watch?v=lsf3MgSymNY Also featured in these videos Vince Herman - Guitar and Drew Emmitt - Mandolin)
Mandolin
Drew Emmitt
Sam Bush
Dobro/Lap Steel
Jerry Douglas - this guy has been recorded on over 2k albums, you've probably heard him play and didn't even know it.
Sorry for the expansive list, I like making lists like this and got a bit carried away. I actually had to restrain myself from finding a youtube video for everyone!