[gb_astro]

Hi Mick.

The OPT 68deg. Superviews appear to be the same as the Superviews sold by Bintel in Australia under there own Bintel brand name and at a similar price, which should be less after freight charges.

However you would have to be a bit skeptical about quality when OPT say this on there own website when describing the Superviews:
"However, we'll be honest... at high magnification the image sharpness can become distorted at the edges of some manufacturer designs in some telescopes without corrective measures."
Still at that price it might be worth a gamble. Also a f10 scope like the Celestron 8SE can be very tolerant of poor eyepiece quality.

Some of the better (expensive) 20mm ER designs are the Pentax XWs, Tele Vue Radians or the Vixen LVWs.

I would have to agree with Astro744 though. Get the scope first, especially if you decide on higher quality eyepieces.
You get hands on experience plus more time for research before making a decision. Also you can buy just one eyepiece and try it. If you like it you can get more of that design. If you don't you get something else.
That's better than having three or four versions of a design you end up not liking.

gb.