You'd be astounded how much old Harleys can be bought for. Granted early Evos are now starting to appreciate but early twin cams are great bikes and so are late Evos and they go on for ever. Alternatively touring Guzzis aren't terribly in demand, it's the retro and sports models that retain their value.
Thanks for that..left field choice for me but it'd be worth a look....I think I've reached that 'certain stage in life'.