For me, having a low out put single coil pickup in between two high output humbuckers is a godsend. Helps me escape the humbucking sound when I want to, even though there's a major volume difference. My Duncan Distortion and PAF pro distort way too easy and sound a bit too sterile for cleans. Combining them with my Vintage Rails (yes, I know it's not a true single coil) helps them clean up nicely.
i'll be 100% honest for you..9 times out of 10...nothing...they just seem to get in the way lol so i try to stick to guitars without middle pickups and on my strat i have the middle PU down real real low...
Lew, that's the reason why I now use Schaller/Eyb Megaswitch E for all my guitars equipped with 3 PUs. Pos 1 2 4 5 like a Strat, Pos 3 is bridge+neck parallel which I like much better - especially with HBs.
I've got the same switching set up on my strat with a SM-1 Mini Humbucker in the neck position. The position 3, has that cool Tele middle sound which is way more useful than the middle pickup by itself.
I use my middle pup for lower gain organic bluesy stuff...
I remember hearing Bonnie Raitt uses it alot for her slide tones,
so when I want to simulate slide with the bar, it works out
great.
My strat used to be a fat strat, so the neck and middle combined had some use to me.
Now it has a hot rails type pickup in the neck position, so the middle pickup is unused, and adjusted as low as possible.. The switch is wired so that I get 2 hummer guitar style switching. Suits me just fine. I guess some like 'em, some don't. I don't.
Thanks for the replies, guys!