AsherPalm wrote:. . . 5'11" and I weigh 155lbs.
. . . So, my questions are:
1) What do you all think about the 250cc bike being underpowered safety argument my friends make? One recommended a Honda Shadow VLX instead of the Rebel.
2) Even if I'm not into sporty bikes, would the Ninja 250 be a good bike for me to start on because it handles well and isn't too expensive, etc?
Well I'm not into sport bikes either, but if you're going to get a cruiser or standard I'd say stay away from the 250cc bikes. There are plenty of good beginner bikes that are in the 500cc to 800cc range, that will also be good for you after you have a couple hundred miles on the bike and have "outgrown" a 250cc bike, especially at your height. Unless you've got very short legs for your height most of the tiny cruisers and standards will be a little uncomfortable for you.
However, I'd wait until AFTER you take the MSF course to do any serious shopping. After riding a bike for a couple days, which will likely be a 250cc bike of some sort, you may notice things about those tiny bikes that will annoy you. I know I sure did.
Some of what you decide to do will be determined by what is comfortable to you, in size, power, and price. For example I might have ended up with a slightly larger bike if I had more money, but I got a Yamaha V-star 650 because it was comfortable and the initial costs and insurance costs were much lower than some of the larger bikes I was interested in buying.
Keep in mind there are some good deals to be found on the used market for some of the smaller bikes. Some riders quickly decide that "starter" bike wasn't enough for them, and upgrade to larger bikes, or many new riders decide getting into riding was a bad idea, and want to get rid of their new ride.