I've gone through a few. Just read the lowes or Home dumpo reviews and buy the best 70 pint/day unit. Then buy the warranty. Its a guarantee that it wont make it.
I had one last about 5 years, it was a Sunpentown, then had a frigidaire that was junk, now I have a GE and it does alright.
Also make sure it has a connection to thread a garden hose on and run it out of the case. The dump bucket is for the birds.