The Womanizers are fab - I've had a few of them.
My fave so far, though, has been the We-Vibe Melt. It lives up to its name and makes me melt every time.
The main reason I've recommended this, though, is because it has the app. My partner has had so much fun using the Melt with me, being in charge of the patterns and strengths. I can hold it in the correct place - he'd struggle to get/keep it in place for long - and give over the control to him. For couples use I'd go for this over the Womanizer.
Also, there's no messing with nozzles, it's completely waterproof (some Womanizers I've had are just splashproof) and the app means that the climb in suction strength is steady with no sudden jump (especially between level 3-4 with Womanizers).