Currently a 40SB and 36AF. Started the AF when I ran out of stamina. So far for battles, SB leans more towards the bursty flashy combo as far as F2P goes
What I have learned is the main affects your team comp. As SB its better to build slightly bursty because that is the class. With a AF, I c*e the shark bomb Jutsu to guarantee a chaos/interrupt which in turn lowers my damage taken so I have the flexibility to have Lee to knock up targets while slowly leeching life. As a SB, having ignition and burst negates healing comps. So having a solid combo to kill off a key unit is important.
Neji/hinata,Sasuke,main and Sakura. Works fine. Decent combo when scarlet uses his mystery to knock up into combo chain. If you plan to use Neji then farm his second star form. His turn 1 accupuncture can save your team from taking alot of burst in the initial round. Leading to Heal+flame burst combo turn 2. Putting you at a major lead. You do get Hinata's second form earlier and she can be used for now but…without anything to combo decently in a SB, I feel the reliability of Neji is better.
Sakura Sasuke Haku SB work well together but its extremely squisky. But if you survive round 1 and set up haku, chances are two ninjas will be dead on that turn. But too squishy to be consistent.
Kiba works decent for a tank but has no proper chase and is useless when puppy dies. So to keep him alive, usually you need a Sakura and main. So you need anothet flex slot which given the current ninjas at 40, doesn't work well. With a water main, I can cut out Sakura and flex in kankuro or lee. Which pushes the team combo and damage. Shino…*s for blaze and is useless alone.
This is subject to change because I am 5 fragments away from getting Kabuto and one day away from getting Kakashi which i know will definitely affect my lineup. If you want, I can keep you guys updated with what I experiment.