I like the Conair suction. Most nose hair trimmers are shaped similarly, which I don't find to be effective. The Conair is different and has worked perfectly since receiving it. Turning the unit on and off required finding my glasses and studying the unit for a few minutes. They should have a clearly documented note on how to turn it on and off written in large type.
I use this tool every morning as a part of my regular grooming regimen. It gets easily to all the nooks and crannies that my shaver can't reach. The nose trimmer attachment is absolutely the best I've ever used.