Siri by Lelo is a great toy to use during intercourse and is the perfect travel companion. It's small, quiet, and has a locking function. I'm a power queen so I need a 5 out of 5 vroom level. Siri can satisfy me on the highest vibration setting but it takes a lot longer than my stronger toys. I won't be using Siri very often for solo play but I'll definitely be using it for external stimulation during intercourse.