This is still proving to be a fantastic form of exercise for me - especially the low impact cardio from the rebounder - no stress on my knees at all!
Since that post in September, I did purchase the head rest pillow - which I highly recommend - it makes your workouts so much more comfortable. I think it's around $30 and definitely worth it!
Also, I discovered this 10 minute Arm Workout video for the reformer that is excellent! Really works those problem areas like our "bat wing" triceps, lol! I suggest you give this a try if you have a reformer! I just can't say enough good things about this machine!