I have riden(if its the incorrect spelling sorry) alot of bikes...I learned on a R1 and gsxr 1k my first bike was a gsxr 600 and my stunt bike which is now a go kart was a 92 cbr 600.
If I give the advice for a bike its cause I have riden it. I only hope my knowledge can help others the sv and yammy are great starter bikes but the duck...well not so much. Oh my first bike i did streets was a 999 very very fun. I remember when i took the motorcycle saftey course I got to ride a rebel lol. I started on a sport bike riding a cruiser for the first time was well a little weird not going to lie. But if you haven't ever riden well even if you have its a great thing to do for the knowledge and cheaper insurance
again when you get close to buying or choosing let me know we can go from there.