Thanks, Dave. You're welcome to have a long peek any time.
Peter, I thought the collimation would be way out each time I reassembled the scope, BUT having installed stiffer springs and using the same truss in each location every time, I've found that the collimation only needs a minor tweak to bring it back in line.
So I think it's only down to personal preference, looks and if you're prepared to spend the extra $500. Optical performance should be the same.
to the crazy house, John
