I am in a similar position, was toying with getting Amex Plat when I was offered it (yep, they found my pulse ) about a year ago. The main reasons were lounge access and SPG Gold, although my travel plans meant I made BA Silver (most of my travel is with BA), Star Alliance Gold and SPG Gold. I had the BA Amex Premium Plus for £30 anyway.

In the end thought I could get comprehensive travel insurance for less than £275. My girlfriend doesn't like Hiltons (so that was out), I'm less than 25 so Hertz #1 was useless and I never travel on Eurostar!

Your best option is to evaluate what benefits you'd use and if they are worth more than £275 get the card. If not then perhaps go with Amex Gold for the VS miles.

For me it was a relatively easy choice. In my experience the travel benefits seem good if you travel a lot on cheap tickets, Priority Pass for lounge access and SPG Gold for the odd room upgrade when SPG Gold isn't equivalent to dirt where you are staying