Thanks all for your input.
Should have known if I asked on here I would end up more confused than when I started.
I will try and go through the bullet points.
Dicky, I have made progress on the Montreal, albeit slower than than I would have liked, I did start a thread on this with the intention of regular updated, oh well best laid plans! I will update it shortly. Where are car SOS when you need them.
Mike, I have just entered my seventh decade, hope to have another ten years terrorising other road users. Still active enough can hop in and out of most cars ok and walk a few miles across dirt tracks most days. Probably won't do more than 7000 miles a year in it.
gb-gta, good post, and you are correct I hadn't considered the Lexus, pretty good wild card and got me thinking I should look at one.
Maser Mike, agree with all you have said, I have considered the Lotus but only from my armchair, they do interest me, what sort of waiting list is there. I had said to myself I would buy new with the gov taxes etc, boils my .....
I have more or less made up my mind to keep the GS. I love the thrill it gives me, It's has fast as I need to go and I know the handling capabilities are beyond mine, I think I would really miss that car.
I have more or less ruled out the Aston, although it's so close to me I may just go and tease the salesman.
The Alfa is very tempting, even if I have it for only a year. It has to be the best car they have produced in a long time.
The Merc is the brains choice, nice car, easy to get serviced around here, my wife would be more comfortable driving it than any of the others, (for when I have an extra sherbet) and with the opening roof I could move the Spider on to solve the garage problem. But yes it will lose perhaps more money than the others. And if I have to fight Geoff Capes for it....
well the Alfa suddenly looks more appealing.
So guess it's the head over heart thing again, heart won last time hence the Maser, guess I need to get out of the armchair and try them all
.