Because I own 2 SkyWatcher Newts I have 2 sets of 10mm and 20mm Super Plossl eyepieces from them plus a 2x Barlow that came with the 10 " scope.
1 x Meade 26mm Series 4000 which I got with my Meade DSX90-AT. Very crisp, high contrast piece, good for projection photography.
A 9mm and 25mm SWLET that I got with my 180mm SkyWatcher Mak. Nice wide view. Some colour fringing but not too bad.
1x Celestron 4mm Plossl that I got for US$12 off eBay. Usable only on extra good seeing, still nights. In fact now that I have the Vixen LV4mm I don't use this piece at all.
Last but by no means least a Vixen LV4mm and a Vixen LV20mm. Nice eyepieces.
So I have eleven but only regularly use the Vixens and Barlow. Would like a 32mm or 40mm for the 180 Mak. Probably get another Vixen LV.
Sorry I forgot I just ordered a 12.5mm Orion Illuminated Reticle from Bintel today so that makes it an even dozen so far.