Hi Andie
I haven't tried PP or SP either, I did do a lot of research and found a lot of negativity about SP. To be honest though, the main reason I decided to go 'vintage' was the cost! It's so expensive to join WW now and i'm the kind of person who would feel like I need the books and eating out guide etc. etc. I kept quite a lot of my old stuff from the SWITCH plan (2007/08) so i'm using that.
I find vintage points (VP) easy to stick to. It is quite dated so it hasn't picked up the sugar is evil message yet but honestly, we are all adults (hopefully!) and know that eating too much sugar is bad! It is just as simple as calories and saturated fat to work out what points are in food. You can get a points calculator app for about 60p and lots of the old books are available online.
I found a facebook group and requested to join a week ago but still haven't been accepted so I can only assume that the group isn't active anymore 
I think, and don't hold me to this (!) that the 49 weekly points were brought in when the SWITCH plan came into force. You could 'point' one week and then switch (I see what they did there!) to the 'Core plan' the next week which was basically a copy of Slimming World and you could eat freely from a list of foods. I think you got 49 weekly points to use, if you needed, as a buffer. I vaguely remember people in my meeting dividing up the 49 points and adding them to their daily points total and gaining weight! I think the idea was that they were just there if you needed them - with the intention of stopping people having a day where they'd eat 0 point soup all day because they were going out on the pop at night! (Not that I ever did that, of course not
)
I have probably waffled on far too much here but I didn't want to miss anything. It's such a quiet board compared to the rest of MN!
Anyway, if you decide to go the VP route then let me know and we can help each other along!