I have used Prox-N and it is VERY good stuff, albeit VERY expensive, hence the reason I can only use it from time to time.
I know many people feel that the LEF brand is almost identical to Proctor's, but I have used both and saw my best results using his formula from his office.
I know many people feel that the LEF brand is almost identical to Proctor's, but I have used both and saw my best results using his formula from his office.