Hi Eardrum!
to the forum, how did you hear about us?
Where abouts in Sydney are you? The central coast IIS crew have monthly observing sessions up at Kulnura, it's not too far for you to drive. There's about 6-12 of us who go each month, with scopes ranging from 8, 10 and 12" dobs, through to 10" Meade SCT's and an 11" Celestron.
You're more than welcome to join us, and see what you're in for and have a look through the different sized scopes and different design scopes of the same aperture.
I've used a 10" Meade SCT (Rod's) and a 10" dob (mine), and I prefer the view through the dob mainly because of the shorter focal length and wider field of view. Of course that's not great for planetary imaging, but if you're not into astrophotography it may not be a concern.
The SCT's with the longer focal length are easier on eyepiece design and easier to collimate. You don't
need a nagler to get sharp stars to the edge of the field of view when using a SCT.
The dobs are much cheaper, but obviously if you want goto then that's what you're paying for.
So enough of the dob vs SCT, onto the Meade vs Celestron. I haven't personally looked through a C925, but there are several forum members who own one and from their reports, plus others I've read, the C925 is the best in the Celestron range with great optics - especially for astrophotography.
There's many more Meade LX200 users on the forums here, they most likely would've done the comparisons you're after so i'm sure they'll chime in.
They're similar in price and capabilities, and I don't think there'll be too many other differences.
Good luck!