First of all, I want you to know I get zero money for writing this recommendation.  I am writing it because I think these gems are incredible.

These are two of the BEST toys for women I have ever experienced.  I use them together if I simply want to bliss out and not be able to walk after.  Yes, that good.

This is the Scarlet 2 Womanizer available on amazon.

There are more elaborate models, this one works for me.  Made of body-safe material, with a silicone head that pops off to be washed after use.  Rechargeable.  100% waterproof.  It stimulates the clitoris without touching it.  I just work my way through the speeds.  I usually cum when I get to the 4th setting.  It has 7.

This the SVAKOM COCO G Spot Vibrator available on amazon. 

The design is such that you will not feel stretched, it just slides in unobtrusively,  fitting nicely to reach your g-spot.  It has 5 levels, I have only used 2.  Made of medical-grade silicone and 100% waterproof.

Personally, I start with the womanizer, then I slip in the g-spot tool.  Not only do I cum, I cum hard, I cum for a long ride (several minutes) intensely.  And yes, give yourself a short break and repeat to cum even stronger and ride the waves even longer.  While I would say it takes a bit of time (certainly more than 8 seconds), it does not take very long.  

I have lots of vibrators, I have used toys for many years, I seriously love these.  Not a lot of $$.  Excellent.  I highly recommend these two toys.