Spectra Precision was the inventor of the first rotating laser and still continues. Many years ago, Spectra Precision started exploring the surveying market while keeping the same level of quality and affordability one of the strongest brand in construction lasers. It targets general contractors and specialty contractors serving large and small commercial job sites as well as residential builders and re-modelers.
It offers 360 degree planes including two vertical planes 90 degrees apart. Its bright crisp laser lines that are easy to see and extend working range. On average, a 25 hr. running time with the Lithium-Ion battery reduce battery expenses. It is accurate to 1/4 inch at 100 feet which is excellent. It includes a universal mount for ceiling grid,metal studs, and other vertical application.
As for the reviews, there is one very interesting Amazon review that compares the Bosch GLL3-80 laser level with the Spectra Precision LT56. Both offer 3 360 degree planes. Here is the link.
Spectra Precision LT56 is a decent laser level. If you are looking for a 3 plane laser level, definitely check it out.