Suffering from Apeture Fever...

Alas I appear to have come down with a bad case of apeture fever (damn
those (in an 8") undetectable 13th magnitude planetary nebulae)

I currently have a 8" LX-90 (the infamous "Lucy") but am thinking
about a getting a 12" (or so) Dob. Any recommendations?

I have the following criteria:

1) Must be transportable (I'm a 28-year old average male) and must fit
(in whatever state) into a small hatchback (i.e. Ford Fiesta)
2) Must be retrofittable (at some point in the future) with
DSC/Goto/Tracking Platform. Don't mind lack of Goto for the
time-being.
3) I live in the UK.
4) Mainly (i.e. 90%) used for observing faint fuzzies. Must be large
enough aperture to reach Abell clusters/Palomar globs.
4) Price: I have a budget of about £1000 ($1500) - much more if I sell
the LX-90.

Best,
Dave
Author of the Supernovae and Supernova Remnants FAQ
http://www.talkorigins.org/faqs/supernova/
Visions of Light, Visions of Darkness - B&W Photography of Wessex
http://www.valinor.freeserve.co.uk/visions.html