Many, many new flyers want to skip the beginner and intermediate planes and move up to the serious stuff right off the bat. Occasionally one makes it work, but rarely. You can do a whole lot with a typical sport plane like the Easy Sport, much more than you've already done. From what I'm reading, all you've done in flying is make a few circuits and land, which has made you think you've got this hobby figured out. But work for a year with a sport plane learning fly those circuits without any altitude or heading changes, learn to pick a spot and land on it consistently, add in perfectly round loops and perfectly straight rolls, and learn to do a hammerhead without drifting and you'll then have the basics figured out. Do all of that various wind conditions without making mistakes and you'll be an intermediate pilot. All through that, a sport plane will forgive your mistakes and still slow down really nicely when you just want to enjoy cruising around the field. As for choices, the aforementioned Easy Sport will work since you're comfortable with it, as will the Ugly Stick (everybody should have one), or if you want a little more style a Sig 4 star.