Location location location!
If I was at the top of Atacama or in Chile I would be getting the 12" and whacking a FLI ML-814 (same chip as the QSI690) as it would be imaging at 0.68"/pixel. Considering the sky clarity and spot diagrams, it allows for drizzle integration for some serious resolution.
Out in the average Aussie burbs however, it doesn't matter a great deal
