All three are good choices. Can't go wrong with any of them. Our Eaglet 50 will be 18 this year and still flys great. We wore out the original K & B 20 and now power it with an OS 25FP. Kit comes with plastic wing tips and is probably the easiest to build, especially if it's your first. It's also very easy to repair. Fly it off the ground or if the grass gets tall, it's easy to hand launch. The Sig Senorita is also an excellant flyer and fairly easy to build, only has many more parts.