If you really want the new one go for it, there will be plenty around at the dealers just take a look at the Plus Sixes that are available as long as you don't want a custom one you could be enjoying one this spring.
The traditionals I believe will hold their prices and show gradual increases as always, there will always be a good market for these by people that prefer the raw handling and power characteristics of these cars.
If I was only to cover 2,000 a year I don't think I would spend North of £75k though on a personal level.
Good luck with your choosing, and welcome to TM.
2009 4/4 Henrietta 1999 Indigo Blue +8 2009 4/4 Sport Green prev 1993 Connaught Green +8 prev