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 . 
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@samzx12  
That's a great tip !! Think Iv'e decided which amplifier to buy and i think ill do it this month, if someone won't change my mind here at this forum :).  I probably will go on CAT JL7/CAT JL7SE
Thanks a lot!
All I can say the bass was bloated or muddy. Just didn't sound controlled and tight. The A3 needs juice.  As another post above a Pass X250.8 would be a great amp to try.  If you don't like it they don't last long for sale. 
From all I’ve read over a period of time the CAT JL5/JL7 power amplifiers have more stout/robust power supplies higher reserves and energy storage thus higher current capability compared to ARC . This according to posters on the whatsbestforum.com forum who’ve compared these two brands. I’ve heard both but not in direct A/B listening.
Charles
Zestos and Carvers are excellent. Carvers run cooler and are easier on the tubes.
@samzx12 , @charles1dad  , @boomerbillone 
Thanks a lot guys !!!