I'm really curious how expensive SACS capacity is given the latency reductions it offers since it's part of the comparison here. Testing from a box connected to TENET (which has SACS capacity) I get 161ms latency to an server in Florida (which fits in line with the figure
here). Same box on my Afrihost connection gives 321ms latency (i.e. twice as high).
SACS plus current EU configuration would seem to give:
* Lower latency to a decent chunk of the EU, at a cost of slight increase in latency to EU West (not sure if for the EU as a whole this is on net positive/breakeven/negative)
* Cut latency to South America maybe by 3/4
* Cut latency to southern US by maybe 33-50%
* Rest of North America probably pretty comparable to normal conditions.
Guessing that transit on SACS must be substantially more expensive (or locked into long-term contracts related to North Atlantic capacity).