If your main interests are the SRX boards, I'd just get a used I7 on eBay for less than $1,000. That's less than a 3 year subscription.

The Cloud would be a good deal for a large commercial studio, but usually not so much for individuals.

It is true that you get to "own" a library each year on the Cloud and have access to all the sounds, but then again many of the libraries have cheaper alternatives. I was interested in the D50 and JV1080 libraries, but I have a number of plug-ins that will replace the JV1080 and D50 cheaper and better. As for the D50, I might as well buy the Boutique version. I tried out the Cloud one day. That was enough. I didn't look back. I am eyeing on the I7 myself.