Not sure about the parts, but nowadays all new scenes come as HD WMV files of about 600 MB. You might still get the lower quality versions as DIVX/AVI files. All know scenes have been released, so, yes, you should be able to get them all. Note that you'll probably get all teencore content if you join TT, that makes that 2 scenes like at ATA. Even if not, I consider TT to be one of her best. One the other side, SE has at least 4 scenes by now. Teencore also has very large pic sets (500-700 pics), shooting each angle like 10-20 times, if that's of any interest.
By the way, people at EBI claim to have given Sineplex a broad hint to book Meggy, and they accepted! 