Cheers Chris, Wayne and Matt, appreciate your feedback
and Wayne, be good to test drive some eyepieces actually so I may wait until SPSP and test out a few in the field actually on the scope...but I really don't want to wait that long
I forgot to add that no I do not have a coma corrector so that was also part of the question, which eyepiece works well with a 12" F4.9 uncorrected Newt for deep sky
Mike