The only decent m/m books I've ever found were fantasy books that happen to have gay or bisexual main characters (Lynn Flewelling, Tanya Huff [Huff's Smoke and... series starring a particularly adorable gay boy who works in Canadian television and happens to be a wizard]), which are good on the fun-story front, but sadly devoid of porn. And believe me, I've looked for good print porn. Alas.