If you're concerned about the quality of covering on the Tower Voyager ARF, the Phoenix Models Dolphin 40 ARF is a good alternative. Also available from Tower Hobbies, the Phoenix Models Dolphin 40 is a nice flying and quick building low wing sport plane ARF priced at $99.99.

While the Dolphin 40 ARF seems to be designed very similarly to the Sig Four Star 40, it's primary advantage over the Tower Hobbies Voyager ARF is that the Phoenix Models Dolphin 40 is covered with Oracover. Oracover is marketed here in the U.S. by Horizon Hobby as Ultracote.