If your amp is capable of high gain, you shouldn't need high output pickups. My experience with the X2n is mud city at high gain. If you're playing a 70's Marshall or even a JCM 800, yeah it can push the front end, but if you're playing through a Boogie Dual Recto, you won't need near that high of an output in a pickup.
I'm considering some GFS pickups for my Alder or Ash bodied Bari-Tele project. I've used some GFS pickups before with very nice results, and the price is right too. They are very well made pickups. I currently have Crunchy Rails that is similar in output and appearance to an X2n, & I have had to lower the height of it considerably. I no longer use it because with the amount of gain I already have available to me, the output compensates by reducing clarity, & I'd rather have clarity than just dirt. There are many well made medium-to-medium high output pickups that you may consider such as GFS's VEH pickup, Vintage Extra Hot, boasting the brown sound.
I'm going for something a lil more quirky rather than some traditional styled humbuckers. I'm going for a TV Jones or a Filtertron approach in the bridge position. I mostly play prog based metal from a Native American approach, I call it Red Metal or Alter-Native, (think of Dream Theater & Metallica visiting a Pow-Wow & never being the same since) but I wanted to make an instrument that would inspire a different style of playing by tone alone. This will be a completely different animal than my 7 string shred-stik.
I'm considering the NEO-VIN tele pickups in the neck position, noise cancelling and available in Pure Vintage (7k) or Hard Vintage (9k)
http://store.guitarfetish.com/nenepi.html
For the bridge, I'm wrestling between:
The BigMouth @ 9.5k: http://store.guitarfetish.com/bibrpiwivito.html
or
a couple of choices from the Retrotron series:
Memphis Alnico2; http://store.guitarfetish.com/meal2ritovij.html
or
Nashville Vintage; http://store.guitarfetish.com/navifihuch.html
or, if I really want to push the output to a higher level,
the Liverpool, http://store.guitarfetish.com/livialhuch.html
or Hot Liverpool, http://store.guitarfetish.com/hotliovalhu.html