I was set on an octavia vrs too, but the focus has more power, better economy and cheaper tax. Dont think there was much between the insurance side of things.
The octavia is a bigger car too. I hate the early octys but the royal bank of fudge has agreed to lend me some cash so i can up my budget a bit.
Also the newer octavias have DSG gearboxes and they seem prone to duel mass failures.

We have a 57 reg cmax that we have had since 2011 and got with 8k miles on it, on 33k now and no issues at all