Which of these refractors would you pick up?

[MilwaukeeLion]

If you had to choose from below 5 refractors / 3 mounts, which would you buy for imaging ?   I know modded camera & cooled CCD are best, just unsure refractor speed / lengths / glass combos that work well for larger or faint objects.  Would below 3 mounts produce accurate tracking for say 6 min or longer or will be there a need for additional tracking device?    Just trying to add up costs in my head before I say yeah or nay, look for other options.  Still at novice to below novice but ive done lots of imaging through 5SE Alt/Az with digitals & little CCD, I mostly like to look through it on clear night, only takes me 5 min to align.  Be nice to image with new set up using good glass and eq mount.

Thanks for any feedback.

ML 

[kendg]

The one mount I would suggest adding in would be the Sky-watcher Az-Eq6. I got one a few month ago and I absolutely love it. It buys a bit of future proofing.

[graemlourens]

+1 for azeq6.

Not let me down yet that thing!