I would get away from kits- but I wouldn't just go buy amber DME and some hops and call it good either!
Amber DME has base malt in it, but it also has other "stuff" in it as well like crystal and possibly Munich malt.
Instead, look at some of our recipes and make one that looks good to you! I have several extract recipes posted that are really good, as do many others, and you can get great results with following a recipe. You get flavor and color from those steeping grains, and using light or extra light DME will be the "base" just like with an all-grain batch.
Think of light DME as the tomato sauce when making spaghetti sauce. The majority of spaghetti sauce is the tomato sauce. Think of the specialty grains as the seasonings- that's where the flavor comes from. By adding garlic, basil, onions, and oregano, you actually have spaghetti sauce instead of tomato sauce.
In brewing, you've got the "tomato sauce" in the light DME. By changing the "seasonings (specialty grains)", you get beer. For example, using light DME, and adding steeping grains of roasted barley and crystal malt, you make a stout. Using light DME and some crystal malt, you make a pale ale. Using light DME and some flaked corn, you could make a cream ale. In other words, the sky is the limit with beer styles by utilizing the specialty grains appropriately.
We have a TON of easy and good recipes on our site:
https://www.homebrewtalk.com/f82/ Many of them can be extract beers. So if you see one that looks good, we can help with instructions or ingredients if you need some assistance.