I can clearly hear the diff between Clarity(overly bright) and Auricaps but Kimbers and Mundorf Supremes sound about the same in the 4 Pi series cap position. Which is just a little bit more detailed than Auricaps and not quite as sweet.
Solens sound pretty much like the MKP's of which the Orange Drops are one?I don't have any experience with sub'ng power supply electrolytics and foils. But I did notice a definite, lengthy break-in progression with Blackgates in the Audio Note Kit 1 power supply. Not merely the brain adjusting but timbral differences.
What the Obbligato's do is sound good over all the octaves with a wider and deeper soundstage than the MKP's. For $2 and $3 a pop.