I have Vertigo Corsas too. I used to have Alpinestars Supertech's before but I think these Sidi's are better in all aspects (except for ankle protection, they caught the heel plates on standard 1000RR rearsets sometimes, but after I put some PP-Tuning rearsets on the probloem went away). Where the Vertigo Corsa's stand head & shoulders above anything (I've tried pretty much all race boots except Daytona) else is the adjustability, you get really nice tight package and get are really good feel from the bike. Some parts got broken away from the ceramic toe slider during my highside last summer so the boots took some beating, but no damage to my feet so they did their job.
My verdict: not perfect (due to ankle prot issue) but best combination I've found by testing a lot of boots.