to me, an 80ED seems to be the natural next step up from your achro.
I decided not to bid on this particular auction after finding out that I'd get a brand new one for the
same price
and would have 2 years warranty with my new purchase.
http://www.astronomytechnologies.com...=15316&c=11388
(plus shipping from US, right, okay, add NZD 100 for that)
(I know, you don't want another story about the ridiculous prices in NZ.
But here goes, anyway:
iOptron ships their
SmartEQPro to my doorstep for NZD
785 (US$650).
A local dealer in ChCh wants NZD
1799 for
the same product - probably even "plus shipping".