You say "full function" but does that include a tape monitor? That is going to narrow your choices considerably. Even if you don't have a tape deck a tape loop is very useful if you have any sort of processor or might in the future.
The other thing is how important your vinyl rig is to you. If you have a nice turntable and cartridge and you've got a $20K budget it would make sense to get a separate phono stage and spend a little less on the preamp. There are incredible bargains on used Pass preamps and there are lots of used high quality phono stages as well. You could have a killer rig if you could stomach separates.