I have the NexStar ARF and it's a great flying model once you get it setup correctly. They also make a RTF version with an OS 46 and Futaba 4 channel that you may want to consider. I think you can pick it up for around $350.

I had a few setup issues with my model. The fuel tank sits between two bulkheads behind the firewall would not fit securely behind the firewall. It would move around once in position and that can change our center of gravity. I corrected this by installing two cup hooks on either side of the fuse and threading two #64 rubber bands behind the tank. It still moves slightly, but it's much better. Also, there's no room to wrap the tank in foam so I get some air bubbles in the fuel line to the carb. I had to mess with the highspeed mixture quite a bit before I found a slightly rich setting to compensate for the bubbles. It occassionally will hiccup while flying at full throttle, but so far it seems to be okay. Until I got the mixture right, I had quite a few deadstick landings. Fortunately this model glides well! Another guy at our club has the same model and he hasn't had any of the fuel tank issues. So I guess it varies from model to model. The other thing is the landing gear. It's designed to snap into place and there's a quick release button if you want to remove it. It works great until you need to adjust it. I had a hard deadstick landing once and the right main gear broke off some of the balsa beneath the fuse. After fixing everything, the gear would no longer snap into place. So i had to remove the quick release mechansim from the fuse and just replaced it with 1/4 ply. Then I screwed the gear permanently in place with four large wood screws. It's now much more secure, but I lost the ability to quickly snap the gear in and off. It's not a big deal though as I never remove the landing gear.

Keep in mind you'll likely encounter small issues with any kit or ARF. They've become quite better since the mid 90s, but they're not perfect.