I have an ATB (All Terrain Bike) purchased in 1989. I bought it because the AM7 I bought in 1984 suffered badly from punctures on its unique Wolber tyres. The ATB felt much more solid than the AM7, and better for off road use because it accommodated larger tyres.
The ATB jigs went to Pashley in the 1990s to make the APBs, using cheaper materials. The jigs were later modified for the TSR range.
I still have the ATB, now with an optional tandem centre insert, 14 speed Rohloff hub, disc rear brake, and ARCC electric assist.
I also have a 1986 Double Pylon, the first one sold in the UK. Great bike but I wouldn't buy one at today's price - £19k I believe! The original price was £7k, but Alex Moulton let me have it for £6k, and by the time I sold my 1998 New Series for 2/3 of what I'd paid for it and reclaimed the VAT (company bike!), the net cost was about £2.5k. It's value today is around £10k.
I also have an 18 speed Bridgestone Moulton, and is my favourite because it is an evolution of the original F-frame design of the 1960s, and rides and handles almost as well as the DP. (I still have my 1965 Moulton, though it's not in use.)