it really depends on who you are, what may apply to one person may not particularly apply to another.
I have quoted in brooklyn and manhattan. No difference. My yearly $100 deductible insurance for my Ducati is sub $300. But that includes 3 other bikes. Understandably, if you want to lower your rate as much as possible to save $$, your best bet is CT IMHO.
You dont need to be a resident of CT to register a bike there (actually, cat got my tougne, my buddy is a NYS resident and got his CAR registered in CT with his wifes dads address and a piece of mail, it may not apply for a bike). His car rate is more than 75% less than mine. Our bike rates are within 25% of each others. Both have 0 points as far as Im aware.
There are some countries in S. America that will require you to buy insurance when you bring the bike in IIRC. And theres no real way to verify honestly....you could carry around a bogus insurance and no one would ever check. I wouldn't do that inside the states though. I found out the hard way that no insurnace is worst than drunk driving in terms of punishment, in NYS its 1 year suspension and $1700 fine, where drunk driving is 3 month suspension and only $1200 fine.
( not me but my buddy!)
You need to come over and do some tire changing man!