The wife and I enjoy sex on a regular basis and she'll tell you that it's best person-to-person. But since we use our toys together, I can tell you she has some mind blowing orgasms with our toys.
In a way it's like the difference is having sex and making love. With me she's making love and that has positive mental connotation. When we're using the toys - its more like she's having sex. The rewards are very physical - somewhat less emotionally.
Every time I give her an orgasm (or 2) with one or more of the toys, she's immediately ready to make love - in other words for her the physical satisfaction is not enough, she needs the emotional fulfillment as well.