I have a few of the more affordable models.
There are a lot more reasonably priced laser level/plumb bobs available now than just a few years ago, so you really have some great choices. As long as youâ€™re not using it for laying out slab work or grade elevations, you can get by with something less expensive.
Although, even Dewalt and others have some decent rotating lasers that wonâ€™t break the bank.
The one I seem to use the most is the Porter-Cable [Robotools] 5-beam laser level/square/plumb bob. It uses servos for leveling as opposed to just a gravity pendulum with magnetic damping, like my older RoboVector [Robotools] 5-beam laser/square/plumb bob does, so vibration caused by others on the jobsite is a lot less of an issue.
These both shoot a laser dot in five different directions at once. You can use them outdoors but on a sunny day their range is a lot less, even with the goofy red glasses they come with.
It is so much faster and easier to layout recessed lights and ceiling fans on the floor and shoot a dot upwards, especially with the 17-foot ceilings that everybody and their mother seem to have in their McMansions these days. If joist or duct locations are a problem, you can see it from the floor and make any necessary adjustments to your lighting layout before even getting up on a ladder or platform.
I also have a Johnson Acculine torpedo laser level that changes between either a horizontal or vertical line or a single dot. It seems very heavy and definitely only has enough range and brightness for indoor use in low light conditions.
I have a standard tri-pod if needed but I rarely seem to use it. They also make mini tripods now that you can set up on a counter top but I donâ€™t own one.