My premium standard is Panasonic HFQ series. These were Walt Jung's standard choice. Personally, I have very good experience with these capacitors. These are very high performance yet very affordable.
ELNA Cerafine caps are the "audiophile" standard. I used 4700uF 50V before and they are less wet sounding. However, Cerafines were generally expensive and are not discontinued making them cost far more. ELNA now makes different series called Duorex II. I find these very good alternative.
Black Gate caps are also "audiophile" standard. Very silky sounding; comparably different from generic caps. However, I found these too costly. I used mid-size caps 47~1000uF in my PSU and I am very impressed with performance. (2 of these costed me more than 4 Duorex electrolytics.)
Sprague caps are comparably cost effective to HFQ. I got about thirty 10000uF 25V dirt cheap. I have used couple in my Szkeres amp. A little wetter sounding than HFQ, but overall smooth. I would bypass them with Orange Drop (SBE).
All in all, if I were to buy large capacitance caps, I would go for HFQ and its decendents. Cerafine and Black Gates are awesome but prices are outrageous preventing you from buying a lot. This is a problem for me. I like paralleling a large quantities of mid sized electrolytics (2200~4700) to achieve high capacitance. This way I can get very low impedance. HFQ's are affordable so it makes perfect sense only costing about 20~30 dollars. However, if I were to buy 30 Cerafine or BG, I will be spending 100's of dollars.
I guess if I have to choose electrolytics for signal coupling I will go straight for BG or Cerafine. But if I have to choose one for PSU, I will choose HFQ and decendents any day.
Nichicon Muse, I was told, are pretty good caps also. Unfortuantely, these are pretty expensive too. So I hasitated to use them.
So you ask, "What if you were Mr. Gates?" Well, then I will choose an odd-ball cap called, Sanyo OSCON. These cost twice or thrice more than BG or Cerafine. Generally, available in low voltage tolarences and low caps. However, if I can get the right value to suit my circuit, these kick bottoms really hard. OSCONs are the best possible caps for low voltage applications. HOWEVER, THESE CAN BANKRUPT YOU.