Hi casstony, thanks for your input.
According to the specifications on the Meade 12'' SCT, they state a 4 inch(physical?)/11.1% (optical ratio?) secondary obstruction figure................so what gives?
Anyhow, with all the compromises that exist with telescope types, I will most likely go the SCT route.
I have had a 16 inch Newtonian(pipe fitting mount

), have at present,an 8 inch F4.4 Orion on a Gazer E.Q.(undriven) and an EQ6 PRO mount with standard and extra large dovetail heads ready for whatever new ''PLANET KILLER'' I decide upon and a TASCO 60mm refractor.
The newtonians have and are a proper nuisance, in having to check and collimate the optical path, rotate that bloody tube to get to the eyepeice and are heavy and long, making set up just that bit harder.
Have never owned a SCT, but have allways wanted a big one............wish me luck coz I'm gonna need it