god damnit, there is no such thing as "best style"
do most bjj guys train 90% on the ground? YES
does that make them better than sambo guys?
submission wrestlers?
Hell no, the techniques are all the same. as long as you get a good instructor the sport is whatever the fuck you want to call it
This should end the topic
BJJ is a great art, but it has its flaws and benefits due to its nature.
Triangles, armbars and chokes were already technically perfected before BJJ, but BJJ brought the attention of training submissions a lot. This however led to less emphasis in top control and takedowns, similar thing happened to Judo where over emphasis on throws let to a less emphasis on the ground.
Me, im a judo guy who had a great luck to train under great newaza teacher, i don't think "Jud0 iz t3h b3sT" because i know that the instructor is that matters. As i have trained under many judo coaches with little newaza. This gave me a great base to learn BJJ.
When i started BJJ i had great top control, good pins, good defense from guard and was capable of doing a cross armbar from any position, but my submission game was bad, i started picking submissions while retaining my good judo newaza, and this allowed me to be on the top of the class, i managed to even submit some of the higher belts and defend my own against blackbelts who owned my peers.
The point is
Train as many things as you can and then develop your own personal style, call it judo, sambo, catch, folkstyle or BJJ, in the end your skill is what matters, not the skill of someone who trains the same as you do.