To be honest, I got the original version of Rin and Len out of pure luck. This package is extremely difficult to find due to so little of them being produced. Rin and Len's original voicebanks (also nicknamed "ACT1") are strong and powerful. And personally, I find them alot clearer than than their ACT2 update. They do have some difficulties however, they can be choppy and have some phonetic issues (which is why CRYPTON initially pulled them and started working on their ACT2). Unfortunately, their ACT2 wasn't nearly as nice as the original (or atleast in my opinion). If you are a VOCALOID fan, collector, or experienced user in the software, and you have the chance to get this I recommend that you do. Dispite their flaws I find working with them to be alot of fun.