Your learning curve would be very short compared to brand new flyers so if you wanted to go that route then I would suggest you get an advanced trainer such as an Hobbico Avistar. The main differences are speed and power and wind penetration and quicker reaction times to the sticks. The extra speed also means that the plane will react quicker than the park flyers but with your experience that shouldn't take you long to get used to. You will also be able to fly in moderate winds where your park flyers wouldn't stand a chance in. Do join a RC club however. Training is free and you can learn to fly safely and have the company of other RC pilots.
[8D]