If you're planning to get the twin lens kit then stick to the twin lens kit for the time being. Shoot with the twin lens kit until you know for sure which lens you want to buy before buying anything.

The twin lens will cover a range from 18mm to 200mm. It will let you explore what focal range you prefer to shoot with. 18mm is sometimes wide enough for some. Unless you feel very restricted by the 18mm then there is no need to go any wider.

The kit lenses are good enough. Don't let all those people tell you otherwise. If you cannot learn to maximize your kit lenses, premium lenses will do you little good.

You see, this is the hallmark of inexperienced newcomers lusting after gears' comment or question. No offense but like I said if you need to ask what are the preferred wide angle lenses then you are not ready to buy any lens be it wide or tele. The reason is there is NO PREFERRED lens out there. Each photographer will have his/her own preference that others may or may not find appealing. No one size fits all solution.

So how do you know which lens is right for you? Through experience! There is no other way. No amount of reading of reviews can tell you which lens is right for you. You will have to go out there and shoot and experience the focal lengths for yourself to find the 'right' one. So stop asking and start shooting. The answer will come but most newcomers will not take that advise. They will blow money on lenses only to find that they do not use them all that much.