Mega: Venusaur vs Charizard vs Blastoise

This is hard. I'm dissapointed with Mega Blastoise in all senses (the design feels like an slightly step backwards, awkwardly holding a large cannon that doesn't seem very mobile while the other two guns looking useless, and not regaining Wartortle's foamy things), but Charizard and Venusaur are both great.

I think I'm going to give Charizard the better design, even. It seems like the most natural yet satisfactory progression. Venusaur admittedly doesn't seem to change as much as it could, but it's still well balanced as also going too far would make it look silly. The body could've changed a bit more, though.
And personally, I preffer Mega Venusaur's design.

For ability... Mega Launcher is simply pretty bad. Just an strong Water Pulse isn't good. Mega Charizard gets Drought, which if we look at abilities by themselves, is easily the best one.

But for battling, Mega Venusaur holding momentum when your Sun gets turned off (specially to counter Rain) seems like a great strategy.

Lead Droughtzard sounds good for Sun teams too. It has trouble restoring the sun due to Stealth Rock, but it still lets you spam powerful attacks right away, which is both what Charizard wants to do and used to need support for.

So I really don't know which of the two I preffer... I'll just go for Venusaur since right now it has less votes.