Unfortunately, more drums will not make you a better player. Sorry to break it to you. One thing that could help, if you're not doing it already, is playing with friends. Playing with a band will force you to become a better drummer. If you don't have friends who play music, you can play along to a mp3, or CD. You can write your own music and add drum beats.
Or you could try learning something different: perhaps some bossanova, swing, 6/8, latin grooves, or marching band snare?
Do you do practice pad drills? LRLRLRLRLR, LLLLL, RRRRR, RRLLRRLLRRLLRRLL, rolls, flans, so on? These improve speed and stick control, the basis of your drumming. My high school band teacher recommended half an hour of rudiments every day. It seems like a lot, but it adds up.
If all else fails, you could take a break. Take one or two weeks off and let your skills gestate in your mind. Who knows, time off might be just what you need.
P.S. Are you taking lessons? A good teacher can help you identify the cause of your hump and get over it.