These threads might help:
http://anabolicminds.com/forum/supplements/82277-anabolic-pump-yellow.html
http://anabolicminds.com/forum/usp-labs/85753-ap-manual.html
http://anabolicminds.com/forum/usp-labs/73322-anabolic-pump-faq.html
Simply put, Yellow Gold was a beta-version of Anabolic Pump. As it turned out, Anabolic Pump was refined several notches better and is significantly more versatile and concentrated than Yellow Gold. Anabolic Pump and P-Slin contain one common ingredient, a Tannis Complex (Extract engineered from Lagerstroemia speciosa), the key glucose disposal agent. This compound, lagerstroemia speciosa, is usually extracted for the active, corosolic acid. The usual extracts, though are usually about 1%, well below the amounts used in clinical trials to produce effective insulin-independent nutrient partitioning. Besides, these standard corosolic-acid extracts are not standardized for tannins, as opposed to Anabolic Pump and P-Slin. Now, P-Slin contains about five times more tannins than Anabolic Pump, allowing you to consume more carbohydrates with it, and making it a perfect supplement for a pre-workout stack. Yet, Anabolic Pump, as a blend, has the unique capability to shuttle glucose to muscle cells, but not to adipose tissue. This allows you to consume Anabolic Pump three times daily and get superior overall results from it.
In general, I would recommend Anabolic Pump for daily use. And P-Slin for pre-workout use. In both cases, you would need to let your body "learn" to use them by fine-tuning carbohydrate intake (in terms of amounts) and timing (after an Anabolic Pump / P-Slin dose).