I use my DL Plat Amex for US purchases and another card for foreign (this year was planning on using my Barkley Arrival) -- and switching to it once I reach $25K on the Amex. (There is no way I'd reach $50K so no additional benefit)

So I may use my Amex overseas but still switch when I reach $25K -- so it probably ends up the same. Still out the increase, though.

The reserve doesn't really do anything more for me -- don't need lounge access and I guess the extra 5K MQM would be nice but I'd have to spend $30K for it. That $5K has an opportunity cost of $110 towards travel on the Arrival so I don't think it works for me.