i find myself getting more into gay twins. so far i've come across:

• The Legend of the Ditto Twins - Jerry Douglas
  thin writing, this one is more of a "get your jollies" type

• Twin Ties (series) - Lynn Kelling
  this one relies heavily on the sex but also explores the relationships fairly seriously

• Psionic Frequency (series) - Talya Andor
  the science fiction is at the forefront with this one, not a "jollies" type

all of these stories containing explicit mature content.
and i want to find others. as much as the taboo excites me, plot and character development (decent writing in general) comes first.
any recommendations?

I can't suggest you anything bc I don't read books in english, but I'm thankful with you for sharing your reads…