I like this CD very much, for two reasons:
1). The harpsichord in this recording sounds just great. It's voice is clear and vivid, each single note is beautiful. I've never thought that I would enjoy so much even the first few notes of the opening aria.
2). The performance is very expressive. The slow variations are not boring, just the opposite - with this recording I could "learn" the music more quickly.
Bear in mind, though, that the CD is 47 minutes long, since there are no repeats of the variations sections. Performing the repeats would make it a 94 minutes recording (Although I think that doing the repeats for only the quick variations would make a less than hour recording).
Nevertheless, this is a very good recording, very enjoyable, and highly recommended. I like it so much, that in the first few days after receiving this CD I listened to it a few times every day.