There are four basic situation (positions) in a real fight; distance (roughly 2 1/2 to three feet), close (roughly within a half a foot to 2 feet), O range (grappling), and ground fighting.
No single style covers all these bases sufficiently. No single style is the ultimate style. Many styles are similar and learning 2 similar styles is redundant and contrary to your growth as a martial artist(such as Karate and Mui-tai).
Ignore doctrine and find what works for you. If you have long powerful legs an emphasis on kicking may be effective. If your short and squat maybe a more power based grappling style such as Judo or wrestling (you already have a low centre of gravity). But always be prepared to throw away the unessential, never get lost in tradition.
That's if you're looking for street practicality. There is much to be said of practicing a style as a form of artistic expression and integrity as well.
For those who may be wondering, I practice Go-Ju-Ryu and Ju-Jitsu. The former I have heavily altered over the years. I prefer a much looser quicker and more practical "free style" modern karate (without the rigidity of tradition). I've gone as far as incorporating boxing techniques (the stance, hooks, streight, weaving, etc) and amalgamating them with Go-Ju-Ryu.
Would be kind of stupid if I picked anything else.