Marko,

My current collection for low-glass high throughout eyepieces are:

4, 6 and 10mm ZAO-II's
5, 7, 9, 12.5, and 18mm BGO's (Baader Genuine Orthos)
17mm TV Plossl (just got this for 25 bucks and haven't played with it yet)
25mm Tak ortho 0.965"

On my wish list is an 8mm AP SPL to replace both my BGO 7 and 9mm as I wanted something that would slot right between my 6 and 10mm ZAO-II's.

My wide field set includes:
6 and 10mm Delos
13mm Ethos
waiting for the 5 and 8mm Delos

Then the barlow is the TMB 1.8x ED