Theoretically (i understand the variables at play) if I was getting 4.5 - 5.5 on DSL in the tri-valley (Dublin specifically) what could I expect from Sonic when/if it goes live here?
It's tough to say. You can make a really rough guess based upon your pre-qualified distance and a look at the statistics in this chart: http://www.dslreports.com/forum/r269108 ... ance-chart
...but bear in mind there is a lot of variability, so only real-world delivery at your premise will give you the final answer. We've got a 30 day money back assurance, so if it turns out what we can deliver is inadequate, you've got no risk. So, try us!