SLD019 is the Tai Tzu set (I hate how he does it)
SLD020 is the Lao (old) Hong Quan set (he does it pretty good), this is the form to do AFTER you learn Xiao Hong Quan, before Da Hong Quan.
A much better version of the Tai Tzu set is here on VCD:
http://www.cmaod.com/Shaolin9Two.html
See SL270
Supposedly the most complete and authentic version of the Da Hong Quan forms are here:
http://www.cmaod.com/Shaolin9.html
See Item Code: SL139, SL140, and SL141
Also, this is THE ONLY place where you will find the 36 posture Rou Quan form made available to the public:
See Item Code: SL114