Thanks a lot guys! When I listen to the clips and see the tone charts, and of course with my own experiences with the Riff Raff I think it is a little strange that the Riff Raff is recommended but not the Emerald? If the Emerald is even brighter than the Riff Raff I will stay away, that would just be too much, but I find that rather strange listening to the classic rock clips. The Emerald sounds fuller and not quite as upper mid heavy, more balanced but still very hard hitting and bright.
For some reason, single coils rarely get too bright, like my LP Jr for instance like I wrote earlier. The LP Jr is probably as bright as my LP Custom with the Riff Raff, but still it felt too bright... Is this just something in my head?
Well, I think the Abraxas is the safe choice here after all. It certainly does not lack treble and I have seen lots of people using it in Les Paul. If I remember correctly some guy on another forum exchanged a Throbak for the Abraxas in a Les Paul and was really satisified!