Not to throw a spanner in the works but have you looked at the Aurora Audio GTQ2?
I know that Geoff has posted in this thread already and being the humble guy that he is won't punt/push his own goods.... so I thought I would give him/it a heads up. (Where is Tony B when you need him, JUST KIDDING!!!!!)
While I think the old Neve's of yesteryear are great (I've worked with BA and original 1073's, along with 1066's and 1084's) in this day and age with prices going through the roof you got to ask yourself if you NEED to go that route when there are many great new boutique alternatives which while not clones, have there history in Neve roots? If I'm not mistaken Geoff worked for Neve for 14 years and been servicing them for over 33 years, so his roots run deep, very deep.
The GTQ2 is an 'evolution' of the 1073, uses a class A discrete mic pre with an integrated EQ circuit, while not as flexible RE the choice of freq ranges it offer more a great broadband paintbrush to be used while tracking... his dual channel unit costs LESS than a single channel 1073 and has an integrated power supply... no wall warts or line lumps...
If you are buying it just to have the Neve name nothing will suit you other than a NEVE unit, maybe a BA will satisfy your needs, but if you want a serious contender which some have expressed sounds BETTER than the 1073, maybe you owe it to yourself to investigate the GTQ2.
Cheers
Matt