bulgarians are awesome, but squats are far superior. The opportunities for progression are FAR greater on a squat than a bulgarian, you can only load a bulgarian squat so much.
This is the way I look at it. Now follow me I'm not normal.............When I think of strength training, I think of functional type strength training. Lets go to the extream. If a someone told me that for the rest of my life that I could only do THREE exercises, would probably be the exercises I chose. Why?
1 arm DB snatch - stimulate the CNS, unilateral strength recruiting almost every motor unit in the upper body while building equal strength on both sides. Also, the conditioning in this particular exercises is amazing.
DB incline instead of straight bar because although it's indirect shoulder work, it's also chest, shoulder girdle stability and also by using DBs I recruit more motor units. I can also use the same exercise for unilateral strength.
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Bulgarian splits - why? You don't walk or run on two legs. A great way to indirectly strengthen low back and psoas.
Substitute - 1 arm DB snatch for medicine ball complex.
All exercises are in that order.