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I also have an 8", with fine optics. My eyepieces are Pentax XW, in 20mm, 10mm and 7mm, plus a TeleVue 2x barlow.
I also have a TeleVue plosl 26mm that I use on occasion, but I find the field of view is about the same as the 20mm XW. The TeleVue produces lots of 'seagulls' towards the edge of the field of view and does not seem to let as much light through, certainly not as nice to use.
The barlow came about because I followed advice - I figured a 5mm XW would be the go for highest magnification, but the concensus was that it would be too much for the system and deliver poor images; and that a 7mm would be best. Not true! In my telescope, the barlowed 7mm (effectively 3.5mm) works really well. And it is fun keeping up with the target!
I went for Pentax XW to gain comfortable eye relief, and a fairly wide field of view. These features make lengthy times at the eyepiece much easier. The 'penalty' was cost.
For general work, the 20mm and 10mm see the most action. For larger field of view work, I decided to go for 10x50 binoculars instead of another lens. Definately 'grab and go', and great for for reading the sky for targets.
A bit down the track, I will probably replace the 7mm with a 5mm, and not bother with the barlow.
There you have my working outfit. It consumed a few dollars, but works just beautifully for me.
Cheers!
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