Who makes good quality bananas ?

BFA bananas all the way.  they have solid contact all the way around and into the terminals and have a very strong grip.  there are various types of attachment.  i use nerve audio on ebay.. i buy copper sleeves to put over them and crimp the crunk out of them.  it's a very secure connection.
http://www.ebay.com/itm/Nerve-Audio-Silver-Ultra-Low-Mass-BFA-Banana-Z-plug-Connector-DIY-Set-of-4-P...

i also used these once.  audioquest.  they came with crimp sleeves and were even more solid, but also bulkier. but you don't have to search for copper crimp sleeves.
https://www.musicdirect.com/connector-upgrades/audioquest-crimp-bfa-bananas-set-of-4

either way, check out BFAs.  more contact area than a spade and stronger spring force than regular bananas. 

Furez makes some stellar termination products and they have different gauge sizes.

I have used their silver plated copper bananas and was very satisfied

Regards...

Any love for Eichmann bananas?

Yeah, right here. 

I just replaced Audioquest bananas with Eichmann sawtooth bananas I bought from VH Audio.  I like them more than the Eichmann bayonets and they are way better than the AQ bananas.
Props to Chris at https://www.vhaudio.com/ for quality products and great customer service at fair prices.
Ian

I've read here and at other places that these work well: https://douglasconnection.com/product/furez-tstsb40ag-silver-plated-copper-banana-plug-connectors-pair/

There are other types and sizes to fit various gauges of wire.

All the best,
Nonoise