I don’t think you mentioned the boat length / tonnage?
I haven’t been to Mexico, but I have used a 60# Bruce with all chain rode for 10 years now and have had good luck in all sorts of bottom conditions. If you’re thinking of investing in a Fortress, one option might be to get a really big one to use in the event of a big storm. Nice thing about the Fortress anchors is that they fit in tight spaces when dis-assembled. I’d invest in the storage bag if you get one.