If you really want to speed things up, get a progressive. You're performing sizing, primer seating, powder dispensing, bullet seating and crimping in one crank of the press. It's close to an order of magnitude increase in speed.
The thing to consider when taking the progressive plunge is how many rounds you load at a time, and how often you switch between the rounds you load. It takes longer to get a progressive set up. It also takes longer to switch between calibers especially if you're going between small and large primers.
If you're looking to crank out 100's or 1000's of same type of ammo at a go, then a progressive is for you. If you're doing lots of load workup and loading batches of 20-50 of one round and 20-50 of another, stick with single stage.
