I would reccomend the abbey vogue 540,but try looking at private sales.we sold our 2007 vogue540 15 month old,very good condition with all extras inc.awning for £9700.Look on ebay and autotrader.Remember to get it cris checked.
I have a 2001 avondale as some one said if you bought new you might have problem with warranty but as for parts there are people who specialise in after market parts
so i woulden't have thought it would be a problem lets be fair how many people can still get parts for classic cars!
I agree with larry h. There are folks out there with very old vans at 25yrs plus and they still manage to fettle them up. I have no worries about finding parts for my 2003 Avondale when the time comes! Glad you made your decision though - happy holidays!