I use both - they take a different approach and are complementary

absolutely not... pure waste of time and money.............

This choice is very dependent on your goals. Personally, I view Stock Advisor as a more conservative service that provides ideas that are balanced between value and growth. I believe Rule Breakers is a more aggressive service looking at companies that are smaller and/or "younger" in their Corporation age; I consider Rule Breakers a more growth orientated service as the name denotes.

Both services have a great track record. I'm a member of many of their services and I recommend to people to start with Stock Advisor - read all you can. It also depends on your investment experience. If after reading and following Stock Advisor then subscribe to other services. I enjoy their financial news and their podcasts also.