You have acceptable bikes, ride them more and you will then know from your experience esactly what you want, You wont get the answer to your question here - you may want different gearing, stiffer frame, more agile steering, more relaxed ride. $700 wont get you anything significantly different from what you have now, so save more money while you decide exactly what you need. Go to bike shops while they are not busy and test ride bikes with different geometries to find out how they feel.