Hi Jhodapp,
I use all three at the same time, plus Tricomin. I actually use Avodart instead of Propecia. I just added Alpecin Caffeine (not the shampoo, but rather the topical) as well. If budget is not an issue I would do everything plus the transplant, as I have. I have had 3 transplants in total (my first one in 2003 didn't have a good result), bummer! 6000 grafts total.
The transplants will be the major difference maker for you. Night and day difference, but also the most expensive by far. For me, the other items I don't believe have any grown any new hair (except the Theradome may have grown a nominal amount)...The combination of everything has only helped slow the process of losing hair down. So you need decide what stage you're in and what's important to you. If you don't get a transplant and try everything else you will probably continue to lose hair but at a much slower rate. Maybe you'll get lucky and it'll halt your hairloss altogether, but it didn't do that for me. For me, the hair transplants have been the life changer.
Feel free to send me a private message and ask more questions!