>>323667436
1.0 base stations have a flat front while 2.0 have a curved front. As you have an OG vive they are likely 1.0 base stations. It shouldn't matter in your case. The G2 is a nice headset sans the tracking, but if you already have the base stations and controllers from your Vive you just use those and enjoy decent tracking. I actually like the G2's screen with the FOV mod more than the Index, but it doesn't have passthrough tragically.

I'd say that the Index headset+controllers would be a better deal than the G2 in this case as controllers with actual thumbsticks are nice.