Yep, shop around, it's amazing what you can find. Although I would second the motion that if it aint broke etc... Are you really in need to spend over 1100 quid on your car? For that money you could buy a spare omega, and just use that one when this one breaks! Think of it as an 1555kg biro. :-)
I understand fully what you are saying. However.......
I do a very large mileage per year. 40'000 +. Now, I could go out and buy a three year old Mondeo / Vectra, and run that for a few years, suffering thousands of pounds in depriciation. Or I could get something like the two vehicles mentioned above on a lease agreement, pay thousands over a few years with the mileage I'd put on it, and have no asset at the end of things.
At the moment I'm still on paternity & holiday leave, (just), and I also still have my Seat Toledo untill such time that the Omega is sorted. What I'd rather do, and what I always do is buy a motor for £2000-£3000, run it for one to two years, then sell it, loosing not a great deal of money in the long run.
The aim is to get the Omega sorted, including purchase price for a maximum budget of £2500. Whilst I have two 'everyday' cars to run, and whilst I'm doing all the other work on the Omega, I'd rather get everything done in one go. Once it's done, it's done, and it likely (crossed fingers), not going to be letting me down in the future, or off the road for anything other than the odd day for routine servicing.