Another vote here for the magic wand! It's the most earth-shattering toy I own, although it can be a bit intense.
I also LOVED the tango, it's like having a bullet-sized version of the magic wand, and it's extremely quiet. I was so gutted to have to send it back with my We-Vibe as they came in a collection together. :(
The We-vibe touch is quiet and powerful, and great for pinpoint stimulation. I just bought the we-vibe passionate play collection and it included the Tango and I couldn't believe the power the little thing has :)
A wand would hit the earth shattering criteria, but it is not especially quiet, and the nerves of someone else hearing it will prevent you from enjoying it to the max. The tango and MiMi are both very good, strong and I'd say the MiMi was the quieter of the 2. I really wanna recommend the L'Amourose Rosa too, cos well, it's awesome and although it's designed for internal use the shape and power make it an awesome clit vibe too.
it is super powerful, Rechargable and a lot cheaper than the Tango. It really gets my rocks off. It has patterns and speeds and remembers what setting you used last! Please consider it it is one of my favourite toys.