[i love you]

Spread is definitely the best overall style to use by theory. Most people use the ASKL setup (A = Left middle finger, S = Left index finer, K = Right index finger, L = Right middle finger) however, it's best to set up your key-setup the way that is more comfortable for you. You can also try a setup like for example: CVBN which is a closer setup and gives you an advantage to index one handed trills while still playing spread which is preferred for some people. I personally use CV,. because i find the lower part of the keyboard more comfortable and that, in my opinion, it's easier for me to trill and wrist-jack patterns.