CAREFUL! SPOILER'S AHEAD!

Me personally my favourite's are:

Vegeta's Super Saiyan Blue Evolution, Goku Black's Super Saiyan Rosé.

Super Saiyan Blue Evolution is one of my favourite forms because I love the fact that vegeta has always obtained his forms out of sheer will and devotion. Just like when he obtained Super Saiyan God, he didn't need the ritual because he worked and trained until he broke through his power limit. This is what happened when he obtained Super Saiyan Blue Evolution. Not long after seeing Goku tap into his Ultra Instinct, Vegeta was determined to surpass Goku by obtaining a new form his own way. I believe the fact that he made a promise to another Saiyan (Cabba) helped him push through his barrier as he would never break a Saiyan promise. Vegeta powered up along side Goku (who powered up to his Super Saiyan Blue with Kaioken), to face off against Jiren.

Super Saiyan Rosé is my 2nd favourite form because it was a new form and let's be real, it looks bad ass. This is an amazing form because only 1 person is capable of obtaining it and that is Goku Black (Zamasu), Rosé is an equivalent to the Super Saiyan form but that isn't everything to it.

We all know that Goku Black is actually Zamasu inside Goku's body, due to the fact that Zamasu control's the body he is able to utilise his God Ki because he is a God. This allows him to easily enhance his Super Saiyan form with all his natural power.

Goku has previously stated that Super Saiyan Blue is basically using God Ki while going Super Saiyan, so in a way, Super Saiyan Rosé is another type of Super Saiyan Blue.

This is why it is my 2nd favourite form as it is an amazing power that is super rare.

What are you're favourite forms? comment below what form and why.