We prefer BlackGates for high end but have good results from Nichicon and since those are considerably more economical, we've been using those in quite a few apps
ALS20A are my favourite caps. I thnk they sound the best of any ever made. If you have any spare ones let me know!!!!
But you are correct they are not small. As ALS20A are no longer available I use Kendeill caps now which are the best I can curently find.
What voltage do you need in the caps. If you can manage with 40v I can let you have a couple of LCR 40v 10,000uf which are good caps that are also no longer made..
