hemmick reef, you are really talking about two different things: recording tracks one or two at a time, and then mixing them 16 channels at a time. I suggest you approach each task individually.
For the recording part of your chain you might be better off with a great quality two channel preamp going directly into your audio interface. This will get you better preamps than you'll find on any of the boards you are considering.
Then, you are free to buy whatever board best suits your needs for mixing. Which may or may not be any of the above. Because you no longer need preamps you are now opened up to use a board like the Speck XtraMix, for example.
I also like the Midas Venice series. Although it is aimed more at live mixing, it is a good all around board, as long as you don't need 8 or more busses.
The Toft (which I haven't heard) has 8 busses, so that would be an important factor for me versus the Venice, Mix Wizard, or Mackie Onyx.
The
Yamaha N12 is a digital board and you said that you want some analog in the chain, so the
yamaha is not a consideration if indeed you want to keep it analog.
In fact, none of these boards have what would generally be considered High end preamps or eq. But some will certainly be better than others. The first decision you have to make is whether you need eight busses or four. That will narrow your search a lot.