I think it depends on where you'll be riding. If there's a lot of road debris or broken glass, or if plants with tough thorns are common in your area, then you probably want the extra protection. But if your roads are kept clean, then the extra weight isn't much fun.
Same with knobbies - if you never plan to go off road, then slicks or road tread give you a lot less rolling resistance on the street. But if there's any gravel or sand roads or grass paths on your usual routes, or if they're nearby and you want to be able to navigate those surfaces, then go with knobbies.
If the feel of the wheels and tires is a big reason why you chose your bike, then you probably don't want to mess with that too much. Maybe you want to play it by ear and see how often those tires don't give you the traction or flat protection that you want.
Most things on bikes (like most things in life!) are a trade-off. You can get something that's acceptable all-around but isn't particularly great at anything - or you can get something that's really good at one thing but really awful at everything else.
PS Enjoy the new bike!!! Welcome back to riding!
Last edited by OakLeaf; 05-14-2008 at 03:52 AM.
Speed comes from what you put behind you. - Judi Ketteler