Hi Craig,
Perhaps consider also ...
replacing the 8mm plossl with a wider field eyepiece (65 deg plus). It makes it much easier to track things at high mag. with a dob (more field of view for the object to drift across).
For many, including myself, a high mag (say 10mm, med say 13/14mm, and low say 21/25mm are the most used focal lengths. The 14mm is my most used.
Tony always gives the greatest advice and he's right on the mark when he mentions about the 31mm having minimum use. It definitely has its place in the eyepiece box however. For me, it's mostly used to find an object that I can't get while I have my 21 or 14mm eyepiece in. Then I switch back over the eyepieces when I've found the object in my 30mm. So not really used as an "observing" eyepiece.
For expensive eyepieces I have used OPT in the States and find their prices worthy (they also sell Televue) Their efficiency and customer service are excellent.
http://www.optcorp.com/
I have also used Bintel many times and rate their customer service quite high.
http://www.bintelshop.com.au/welcome.htm
All the best with your choice,

Suzy.
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