RE: Which second plane
Hey jelly bean, I hope you're looking forward to Friday! Several members of one of my local clubs have Slingers and they all have a ball flying them. The slinger can be slowed down to fly really gently. The guys in the club do this and fly around in "formation" around the field, stretching flight times out to twenty or twenty five minutes sometimes.
Of course, the Slinger is no slouch at full throttle if you're in the mood for some high speed flying. They're quite impressive when doing loops and shooting across the field at top speed.
One thing I haven't seen mentioned here yet is that you'll need channel mixing capabilities to fly the elevons on the Slinger. Hopefully you have a computer radio with channel mixing built in. If not, you can buy a simple mixing module that plugs into your receiver. Make sure an experienced "flying wing" pilot helps you set up the mixing for the control surfaces and center of gravity. Flying wings can be just a bit tricky in these areas for the novice pilot.