I would recommend the Hitachi. I've heard that some feel the Fairy's vibrations are buzzy and some with a "Clit O Steel" can't get off with them. With the Hitachi, you can always mute the vibrational strength with a blanket or a sheet or your panties. But, you can't make the Fairy any stronger by any means. That way, as you work your way up, you can remove layers of fabric and still have a good working massager if you decide to go bareback with super vibrational speed.
Of course, I also recommend the Wahl 7 in 1 Two Speed Massager
. It's the best toy in my collection. I rely on it, and use it virtually every time we have sex or I play alone, along with other toys. It's actually deeper than the Hitachi and a lot quieter. It's the best toy ever, IMO.
Ugly as sin and more\ fun.