The HTC Vive Cosmos is a great VR headset held back by bad controller ergonomics. It's comfort and lack of base stations makes it a good upgrade from the Vive.
The HTC Vive Cosmos Elite with the External Tracking Faceplate gives you everything you need in a VR headset, but the price makes it a tough buy against the current competition.
HTC's Vive Pro offers a comfy upgrade path for VR early adopters. It's the best consumer headset available. Just make sure your GPU and wallet can take the hit.
HTC and Valve bet on tracked wand controllers for VR. Now, HTC is doubling down with the Vive Tracker universal tracking device. With them, you can track pretty much anything in VR.