I think the shedding is overrated with minoxidil. But, hey, I think shedding is overrated with anything. It's too easy to get upset over it. Best to ignore it. Easier said than done, but you have to try.
I have had pretty good success with Minoxidil 5%. I use the generic wal-mart brand and use it on my hairline as well as my crown. I use 1mL on the crown and 1mL on the hairline twice a day. Yup, you heard right. I cannot say for sure that it helps the hairline, but it sure isn't hurting, thats for sure.
I have heard a lot of discussion on the 15%. In discussing the possible benefits of the 15%, a physician friend of mine pointed out that minoxidil can very well have a "bell curve" effect. What he meant was that you can see an increase in performance up to a point, but after that when you increase the doseage the performance can actually diminish. Now, keep in mind that this is not proven and I am not saying it is. Niether is he, for that matter. The fact is, noone really knows yet at which point that this can happen with Minoxidil. I think Dr. Lee makes very good products and if you use the 15% with great success, then I will be very happy for you and I will also be very eager to hear about it.
For me, the 5% works well. Keep in mind that I am a fast responder to medication and I started Finasteride at the same time that I started Minoxidil, but I saw an overall improvement to my hair at around 4 months. I try not to look in the mirror much at all, but the improvement was definitely there. Will you get the same results? I don't know. Everyone is definitely different.
Even though I don't use it, the addition of Retin-A in the minoxidil is definitely promising as it carries the active ingredient through the scalp at a higher rate of absorbtion. You may want to look at this as well, as Dr. Lee does offer that too.
Best of luck to you.