vflash isn't that old but seemed to come and go quickly. I got several games at big lots (along with the system) last year around this time. Check ebay. Last time I looked they seemed to have several listed.
V smile pocket is the handheld. Had they come out with that first I would have just purchased that probably. But they came out with vsmile first. The handheld plugs into the tv if you want along with being portable (2 for 1). The vmotion came along last year is kind of like a wii for little kids in my opinion. I have never seen one used in person (unless you count when Jon and Kate's kids were playing it) but I think it would be fun.
I bought my son's vsmile around the time he was 3. He is almost 7 and well worth the $ I paid. We also have the pocket that I got about 6-12 months later when it came out.