Spike recs please?

After several years out of the Buffy fandom, I recently got bitten by a craving for Spike-centric fics. I used to avoid Spike/Xander fics because all the ones I read seemed to be about big bad Spike and submissive little boy Xander. (Nothing wrong with that, but it doesn't really appeal). There must be some fics out there where Xander is a bit more dominant than Spike? Long, plotty fics are preferred. Any recs you can give will be greatly appreciated!

Thanks
Isolda