I would agree with a lot of the above, Alan was (and still is) massively patient with me around specs when I commissioned my first ACG. Still my favourite bass ever, and will never be sold!
If you want to really try a load of ACG basses I heartily recommend the Moffat bass bash in March. There will be a bunch there to try, both Alan's stock plus the a goodly selection from owners who will bring instruments up for others to try. The choices are so extensive a few hours spent trying some basses out is well worth the time before you commit to a spec.
Also if it suits you I am based in Chorley (Lancashire) and you are most welcome to come and try my basses out. I will provide refreshments and conversation as required.