I took the plunge this BF and used it for the first time this weekend...I am in love!
I also have the Revlon brush but don't see myself using that again ever...too many broken hairs on the floor and it tore up my ends. It is heavy and loud, I had to take several breaks because my arms would get tired. I don't know if it saves me any time but as someone said up-thread it saves my hair so for that alone it's worth it! My hair is thick and HL so I tried to pre-dry a little so it wouldn't take as long. I can see me using this at least once a month now for sure, whereas with the Revlon brush I only used it maybe 4-5 times a year.