I’ve used a bunch for mapping caves and other sites. Depends on what you need to measure I guess. The bosch GLM80 is ok for indoors but it struggles outdoors especially with not so smooth targets. I have a UNI-T (UT395B I think) which has a camera for measuring outdoors when the laser is not visible. It’s my favorite among the cheap ones although I doubt it’s water resistant. Milesey P7 is also ok with some extra features like estimating remote distances. Don’t expect to be able to measure distance up to specs for the cheap ones.
Leica still makes the best LDMs and their lasers just measure things faster and more accurate. So for professional use I’d still recommend leica distos despite the higher price tags. I’m also modding some Caving Disto X2s for our club and that is the best measuring tool ever!!! I’m wondering why Leica just don’t make them out of the box . Cavers have long proven they are super accurate and reliable.