But from what I read, Bob Roberts kits are the best.
Which shows that you shouldn't believe everything you read.....
To be totally honest: my SW cockpit Amplifone and AR-II board are cap-kitted with BR's caps. (I still believed in the cap-kit 'm all-fairy tale then) and they work fine so far. Mostly they are Xicon brand with some other rather unknown brand mixed in.
I wouldn't rate them as bad, but saying they are "the best" is doubtfull. Caps will show their quality over many years mostly...
If I need to use new one's I stick with well known brands, but if my cap tester says the old one's are still good, I prefer to leave them as Atari usually used Nichicon and these are good quality.
I actually believe caps were constructed better BITD then today, as price is everything today....