Hi @Ben_Vrackie, no problem!
Yes, the category of trail running shoes has a lot of variability. The La Sportiva Bushido II is my all-time favorite trail running shoe. I love it for both trail running and day hikes. If you end up buying this shoe, just make sure you order a 1/2 larger than your current running/hiking shoe. My brother actually just bought the men's version of this shoe from REI and has already fallen in love with them haha. I haven't tried any trail runners by Scarpa or Salomon - I've used several different trail runners made by La Sportiva and have found them to be amazing, so I have just stuck to the brand that I know and trust.
I hope you're able to get to Torres del Paine - both the W and O are amazing! I was in Torres del Paine in November 2017. The weather in November/December is pretty similar, although the weather throughout the park varies greatly from season-to-season. Feel free to reach out if you want any tips about Chile/Patagonia/Torres del Paine/nearby towns/other stuff!
one or more gifts or other benefits from the co-op.