Hi Glenn, welcome to KiteLife!
Based on what you've shared, it would seem to me that something in the $150-$200 class would an ideal next step, using 80'-110' lines (more airspace in which to play).
With regard to specific kite recommendations, I'll leave that to the folks here who are more familiar with what is available these days.
Keep on coming back, we've got a good group here and we're always happy to help a fellow flier!