>>295196079
WMR for $200 isn't bad if you're a poorfag. 
I used to think Quest + link cable would be good, except that nothing worthwhile was made for standalone Quest, so you'll end up using the link cable all the time at which point Rift S is better.
Index is only worthwhile if you intend to get full body tracking. The extra $300 you'd have to shell out for lighthouses makes it comparable to Rift S in price.