I'd imagine it has noticeably different sounds compared to the first Buggle Driver but other then that I doubt it. It does come with the Kamen Rider Chronicles Gashat though.

We'll have to wait and see, but judging from how Poppy transformed by hitting a button first, I assume the Buggle Driver II is like the Gashat Gear Dual Beta. It's similar, but there's differences

Short answer: Yes. They have different sounds.

The first Buggle Driver/Bugvisor adds 'Genocide' to the transformation, followed by a Zombie Wail, like this:

Danger! Danger! Genocide! Death the Crisis! Dangerous Zombie! AHHHHH!

With the bold, being the Bugvisor's additions.
The Bugvisor II adds 'War' to the transformation announcements of Toki Meki Crisis and Kamen Rider Chronicle, and may lack the 'Let's Game, Bad Game, Dead Game, What'cha Name? The Bugster!' transformation announcement, and may have nothing, or something else entirely.

I'm guessing Chronicle will get a Candy toy or gashapon version so that might be something if I don't want the full Driver and since Toki Meki is a separate release there's no issue there
The thing that bothers me I suppose is the price of it and since I already have the bugvisor even with the new sounds I'm struggling to justify it in my mind

I might pick one up. Since I started collecting toys around Ex-Aid's late teens or so, I haven't really been collecting the Gashat despite my love for them. All I have is Mighty Brothers XX. I might pick the Buggle Driver II, the DX Legend Rider Gashats, and maybe the Double Gashats before calling it quits on the show's toyline. I love video games and the Gashats but I've joined way too late to try and scramble to get every single DX item. I'll stick to candy/capsule versions thank you.

The Buggle Driver II will be around 6500 yen I believe so I'm not sure as I said if I'll go for that and to be honest I think collecting it your way really isn't as bad as my way for example which was preorder the Gamer Driver and DX Gashats before the show started and then crossing my fingers and hoping I like it which I think you saw my regret on the Kyuranger toy thread with some purchases I made via this method
So there's nothing wrong with waiting and getting a feel for the show and toy line and then getting capsules and candy toy versions of the gimmicks

Would the people who know about these things recommend the Candy/Capsule gashats to me? I know they have to be put together, which doesn't bother me, I'm just interested in how good value they are (like how many sounds there are, for example))

I just watched the latest episode of Ex-Aid and it looks like they just sold me on the Buggle Driver II, the Tokimeki Gashat, and especially the Kamen Rider Chronicles Gashat. Much like the poppy version of the DoRiMeFa Beat Gashat, I'm very surprised by how much I like the Tokimeki Gashat. Maybe its because its all cutesy and what not? *chuckles* Man, those times when the show sells you on something you were on the fence about. Does anyone have any idea when they go on preorder?

It's may release for both the driver and toki gashat
So anytime in the next two weeks I'd imagine

Ya, that sounds about right thanks. Now, I just need to figure out whether or not I want to buy the Gashat Gear Dual...