The way you are describing your riding appears to be a low effort type of cruising. That is, there is no sweating involved. What you will likely find out with your new bike is that you'll gravitate to a similar effort level and pedal rpm.

My suggestion is to forget about the maximum gear when selecting your new bike. As suggested before, the minimum gear may be more interesting, but only if you are inclined to riding uphill. Try out the bikes. A nice light bike with good wheels will give you a much bigger impression of liveliness and speed than the specific gears will.