I completely agree. Its definately a challenge for us meso's (I'm 5'2" as well). It was actually a relief when I found others on this forum just like me. I am forever experimenting to find the right mix. I did the tank top rotation that everyone seemed to be getting great results with and found myself bulking, then I did Cathes MIS/PH rotaion and I thought for sure all of that endurance work would cut me up, but still bulky. Then I thought maybe my muscles need more rest, so now I'm doing all of PS once a week and Circuit Max once a week and trying to add pilates and/or yoga at least once a week, in addition to my cardio days. The challenge we have is that we need to keep up the cardio, lots of it, which makes its hard to schedule everything. A weight day isn't always just a weight day. For those of you who don't understand bulking its not just that our muscles are growing, its that they almost keep the swell, don't appear as hard developed muscle necessarily.
I'm with Lisa, one cheat day can really make a difference. Sometimes it really amazes me as much as frustrates me. We just aren't meant to be long and lean. I too would love to be an ecto, but I'm working on making the best of what I've got!
In response to the first post. I found that S&H bulked my legs, but not necessarily my upper body.