The stuff I get is very pure and very potent and I'd still recommend eating a ten strip of it at least once. You may think you've seen all it can do, but the more you take the harder you trip. Unless you're getting 500 ug tabs you must have a very low tolerance. Define "hardcore" tripping. 2500 ug is a vastly different experience from even 2000.
let me rephrase somewhat. I had very intense visuals and experienced an incredibly extroverted view of myself for most of the trip. it was a trip where i truly feel that i learned something.