I've only tried Ritalin and Adderall, both in small 5mg doses (at max 2x per day with breaks on weekends). I've found personally that switching between the two

I've only tried Ritalin and Adderall, both in small 5mg doses (at max 2x per day with breaks on weekends). I've found personally that switching between the two every 5-6 months seems to be a productive course of action. I have not encountered any need to increase my dose due to building up a dependency.