Bottle jack recommendations?

I am looking to get a bottle jack to make summer/winter wheel swap easy. However the bottle jacks I have looked at have a pretty much flat head without the dip in the center to take the notch protruding down at the scissor jack points on the car. Any recommendations/suggestions from folks that have used a bottle jack?

Also, I saw a couple of threads with reference to an "electric bottle jack". Any recommendations there as well?

Thanks.