Which amplifier should i buy


Hi,
Iv'e already asked , quite similar question , but i would like to clarify my question. So , Iv'e ordered a new speakers, Magico A3 and now i want to buy an amplifier, a tube amplifier. The amount of money that i can allow myself is up to 20,000$. The possibilities that i thought about are : zesto eror 300 / vtl MB -450 series ||| signature / vac phi 170 (two - i mean transform it monobloc) . Those are the options that i thought about till now. Does anyone can recommend which is the best option in this amount of money , it doesn't have to be from the option list that i mentioned.Unfortunately  there are brands that i can not buy in my country (ISR) , for example cat....
Thanks to anyone . 
128x128haimr
If you like Audio Research and can stand the heat, your budget is more than sufficient to buy a pair of big reference monoblocks used and re-valve and re-cap.

Currently on eBay: Ref 210s at £7995, Ref 600s, re-valved, at $8,490.
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Better check out Bob Carvers 350 Mono blocks at 350 wpc. Only $10,000 & dealers give a 3 year 0 interest.  Great amps.https://www.bobcarvercorp.com/crimson-raven
Wow , thanks for everyone here for your suggestions you are all really great, hope that i could suggest too, to someone else in the future.

There are a lot of options, i think, for mean time , till i change my mind again :), that i will focus on cat JL7 (although its above my budget , but will see ) or the audio research 160 M/S
Thanks again for everyone