Do you have a preferred aircraft type or era? Truly scale WWII warbirds can be hard to build (well) and tricky to fly (because of the wing loading). Some of the civilian types can be good fliers and not so involved to build. My own, perhaps somewhat biased, opinion is that WWI models are fairly easy to build (mostly just stick and "tissue" construction).

The Flair "scout" kits are pretty easy to build as are the Balsa USA kits. You certainly can't go wrong with a Puppeteer, which is a "sport scale" Sopwith Pup. Here's mine.

http://www.flairmodels.co.uk/Aircraf...coutframes.htm