Hi there, it's been a while since you posted this so might be a dead issue now, but I wanted to add a few things, having direct experience with the C9.25 and the Mewlon 210.
The CG5 should be fine for either OTA for all your visual and any planetary imaging needs (long exposure deep sky imaging prob not so well suited). I use the same (EQ5) and so does Asimov for his C9.25 and they are more than adequate for most purposes.
I've had both the Mewlon 210 and presently the Mewlon 180 and use this alternately with my C9.25 almost exclusively for imaging planets. The Tak has great optics no doubt, but the C9.25 is also very good. Under good to excellent seeing conditions the C9.25 will always outperform the smaller Tak... aperture is a good deal of the end-result in planetary imaging. Under average to poor conditions the Tak is at least as good as the C9.25 and a lot lighter and with the major advantage of an open tube meaning no dew and quicker cool down times (this can mean a lot depending on your situation). It really come down to how important this is to you and what you want to do with the scope which is best for you.
Both are great scopes. One thing I do like about the C9.25 is the sheer range of reasonably priced accessories that can be added... and you don't feel so bad about adding less than premium accessories as you would to the Tak.
ANyway, best of luck with your decision, even if you've already made it
