You need to explain why you singled these registrars out Manic. But as a rule, the "you pay for what you get" applies.
If anyone running a registrar starts feeling they are working for free, then the whiplash will happen, sooner, or later.
The internet is an extreme example of free economy. Everyone wants to be competitive, even to the state of foolishness.
Hedge your bets carefully. Because the penny wise pound foolish mentality could get you into really hot shmoo one day.