While waiting for the Strongest 10 to be completed, fans have been debating for a long time on what is the strongest form for Goku. Some say it is the Super Saiyan God while others strongly disagree and favor the Super Saiyan Blue Kaioken.
Comparing the two outstanding forms of Goku is very hard to do. However, to end the debate, here are a few things to remember when dealing with some information about “Dragon Ball Super”. The manga series and anime version sometimes don't have the same exact details. To put it into perspective, Goku’s best form depends on the situation that he is in.
Super Saiyan Blue Kaioken
If fans are looking for a badass and a ruthless fighter, they might go with the Super Saiyan Blue Kaioken. This form can be considered as the go-to move of Goku. As seen numerous times, Goku can elevate his fighting skill at will. Super Saiyan Blue Kaioken can also be activated in an instant. The only problem with Super Saiyan Blue Kaioken: it is missing the element of surprise. Basically, when Goku uses this form, his opponents have already an idea on Goku’s power level.
Super Saiyan God
Super Saiyan God is the opposite of Super Saiyan Blue Kaioken. Although there are still some questions about the power level, Super Saiyan God is good for tactical use. Goku needs a certain amount of time to reach this form. Also, this form will not show any changes on the power level unless Goku is forced to do so. Regardless of what form Goku will use, both forms are deadly as showcased in multiple episodes.
There’s a recent thread on Reddit if Vegeta can also do both without using too much effort. According to some “Dragon Ball Super”, Vegeta has the uncanny way of displaying the same power like Goku, the only difference is, Goku has the ability to concentrate more.