i havent tried either of those clubs, however i have an MD golf superstrong18* hybrid, which has one of the best graphite shafts on the market and that suits me just fine, plus its alot cheaper than the Taylormade and callaway clubs, and personally i dont think they are any better. The MD golf superstrong driver was joint longest driver on the market and it is a third of the price of some callaway drivers.
Wouldnt worry to much about distance, if you do, you are maybe trying to hit it harder to get more distance then that is probably why you are inconsistent(or one of the reasons). I am a short hitter aswell and it doesnt effect me, all it means is after my drive i hit a 3iron and my playing partner hits a 5iron.
Graphite is better for woods and hybrids, especially as you are a short hitter, i would get steel in your wedges and short irons because it helps with accuracy. Hope i was of some help, remember it is ultimately you not the clubs which will shave strokes off your score, its so easy to become an equipment junkie, especially when you start out, i would buy a cheaper club and spend the spare money on lessons!