I have an older single speed from Penn State Industries many years ago. Jet I think makes for them now. Really no need for 3 speeds but seems that is the way they come these days. I put in on in my shop as soon as I enter and turn it off 1 hour after I leave. The remote control again to me is a joke. Mine is on a switched outlet, I was thinking of putting it on a timer but have not really gotten there yet. they are a must if you have a full blow work shop and use tablesaws and planers and sanders. They will catch that small particle dust that just lingers in the air. You are not going to be turning it on and off while you are in the shop. If you are cutting and making dust in the shop you turn it on and as I said leave it run for awhile after you leave. They have a pre filter and a 1 micron filter that needs to be replaced every so often so if you get one it is a good idea to have that filter for a spare. Depending how much work you do in the shop will determine how long it lasts. I have a full blown shop so I probably replace every 2 years. But I do a quick vac of it in between. It is pleated so you will not be able to get into it, just the edges. All are about the same.
By the way by no means does that take the place of a dust collector or even a dust mask so do not think that way. It is just another layer of safety to let you enjoy the hobby safely.