I have a optically perfect 90 ETX, the views through this scope are really something for a 90mm scope. I use the OTA on a small unitron 114 mount, so light and easy to use, the best grab and scope I have ever had. So since the optics are so good on this 90, I have thought about getting a 125 ETX, and putting that on my 140 unitron mount, and have two just alike, except that one is larger. But I have read somewhere that Meade could not get the optics as sharp in the 125 as in the 90, that the views would be a little brighter, but the detail and sharpness would not be as good. If anyone here has both of them, could they say if this is right, or is the 125 can be as good as the 90 on sharpness and clarity. Or either the 105 ETX, which you hardly ever hear anything about. With only an increase of 15mm, the 105 may not be worth the difference, even if the optics are very sharp.