Kind of funny for me to see this here today... after not
having studied the modes or practiced scales for YEARS, i
randomly decided to give myself a quick refresher course
on Saturday night while browsing "The Guitar Handbook".
It was printed in '82 & i got mine in '84 w/ my first guitar.
I was kind of curious to find out which scales & modes
i tend to use most often too & discovered that, aside
from the ever present Pentatonic & Blues scales, i lean
naturally toward a fairly healthy mix of Aeolian, Dorian,
Ionian & Mixolydian modes as a lead guitarist, w/ some
sprinkling of Lydian & Phrygian used as passing tones,
but that i use all of this stuff unconsciously, in that
i'm not necessarily thinking about it in the moment.
Like, i'm never thinking: "I'll mix it up right here w/
a touch of Phrygian after that Harmonic Minor run."
It's all just become ingrained in my natural musical
vocabulary at this point, you know what i mean?
Which means i actually turned out to be a pretty
well-rounded player after all these years, i think.
It's a pleasant surprise, too, because although i have
my own style & always sound like me no matter what
gear i'm using, sometimes i feel like i'm stuck in a rut.
But i guess what i sometimes think of as my
"rut" is just my style, for better or worse, &
the fact that i use lots of Pentatonic/Blues.
Aside from deciphering my playing style, i found
my Saturday mode studies to be very rewarding &
i'm positive i'm gonna do some more of it today by
putting my iTunes on shuffle & just playing along.
Even though i now know that i put this stuff to
pretty good (if mostly unconscious) use already,
there's always more to learn & discover, & the
various positions for playing the modes offer a
great way to find different ways of looking at
the neck & how things relate to each other.
I've also issued a challenge to myself to
write a song based on the Locrian mode,
which is the most non-Western sounding.
I've been terribly undisciplined for years when it comes
to "practicing" in the traditional sense, but exploring the
modes is so fun that it doesn't even feel like practicing.
Good stuff... & highly recommended.
p.s.
Sorry for the long post. I hope it's not too rambling.

I'm just a little hopped up on modes at the moment &
couldn't resist sharing my excitement & experience.