Wheel-on vs direct drive trainer

I have a wheel-on trainer right now and am saving for an electronic one. What are the pros and cons of going wheel-on vs direct drive? Which is less of a hassle to pop your bike off and on if you want to ride both indoor and outdoor during the week (non winter months)? Do you mount a training tire or accept having to replace your rear tire more frequently? The tires on my bike are only $35 each if that helps, what would you do?