best preamps

Whatever they might be they got to be tube. 

There are some great suggestions listed. Here are a couple more -  forgive me if they have already been mentioned.

Conrad Johnson Evolution 20 - Discontinued  - used market
https://conradjohnson.com/vintage-conrad-johnson-products/

Rogue Audio Hera 2 - Discontinued - used market
http://www.rogueaudio.com/Products_Hera_Front.htm

Ypsilon Electronics
http://ypsilonelectronics.com/pst-100/

'Best' I've heard include an EAR 912...a VTL 17.5 VII and a Boulder...forget which model.

I have demoed the Ypsilon PST-100 mk2 in my system, it is indeed one of the top preamps on the market.

furiouslyadrift,
What particular model of FUNK preamp are you speaking of? Just curious if it is the one I think it is.