RE: What a good plane to get introduced to high speed?
Well ... the Skyraider is decently fast only. Even the Super Sport. They are a good start but to be honest its not topping 60 mph. For something fast you can always start off with the Sonic 500 ... those are designed after the Quickie 500s but its not as fast. Only draw back is that you need to get a smaller engine like a OS32SX. If its fast you can try the Shrike, seen one fly and that baby tops 70 mph.
For me I love my EP pylon, small and cheap (cheap Chinese made outrunner and ESC) and I easily hit 70+ mph.