I have owned the Lenovo Explorer, the HP Reverb, the Reverb G2, and the Quest 2.
After all the futzing with both Reverbs and their cable issues, knowing what I know now - if I had it to do over again I would've skipped the Reverbs and the Quest 2 and just gotten the Valve Index package with base stations and controllers.
If I had done that, I'd probably still be using the Index today; instead I'm dealing with dropouts and connection problems on my second replacement cable for the Reverb G2. Plus HP tech support is so problematic for out-of-warranty items (read nonexistent) I can't imagine I will ever buy an HP product again. IMO the Index is now a generation behind and needs a steep price cut to remain competitive so I wouldn't get one today. But if I had dropped the cash on it back then, I'd have my base stations and controllers and be all set for an upgrade to the Aero.
The Quest 2 had solid software, good build quality, but was too front-heavy for me, even with the 3 different strap designs I tried. Decent displays, somewhat small FOV - but the Quest 2 + link cable would be a good starter unit just to try VR and see if you like it. Would keep some resale value too if you decide you love VR and want to upgrade to a more expensive and capable unit.