I would suggest you to try the Christmas edition of Sweet Bonanza than the original Sweet Bonanza.
As per my experience Sweet Bonanza X'mas is better in giving big multiplier.
If I remember it correctly, I have ever hit more than 1,000x multiplier few times with the buy feature ofc.
But I have never hit it in the Sweet Bonanza, but for sure its all about luck as maybe my luck is better in the xmas edition than the original one.
I've also tried the Xmas version, so far my highest win is 400x. Yeah, maybe I'll give it a try when I'm playing again. Yeah, luck is more important too, we can't be like other players, because from our side it never get it or getting it but in smaller portion.
well, I'm interested in some games from spadegaming, I tried some demos, but it seems the buy bonus is more interesting in pragmatic. Maybe I still haven't found the best one or is it? If it is better at pragmatic, maybe I will be choosing to play in pragmatic instead.