George, don't leave us hanging. What are the brands you think are the same?
I won't outright name a product of rebadging, but if you spend the time and do your homework you will see for yourself. They have selected 20 from 1uF to 100uF from that Solen series and voltage, and if you compare dimensions specs cap for cap you will see, that all "boutique" are not what they appear to be.
Cheers George