I don't hold the "rechargeable&quo t; tag up on a pedestal anymore. When you get sick of the toy, or if you never liked it, or when it finally dies (and rechargeable batteries don't last forever) you throwing it out is terrible for the environment. Much worse than the standard AA batteries, which have been made safer for landfills.
I've been disappointed with 80% of my luxury vibes. For the vibrators covered in a silicone skin....why? Unless its covering up a moving thing. Take the Lelo Mona. That could be all velvet-cote plastic and it would perform and feel the same. Same for many (most) of the Picobong line (not exactly luxury, but still overpriced). The vibrations are usually not as intense (except for that one Vanity, the VR6, which powerbullet admits is the most powerful and of course the We Vibe Salsa & Tango). The luxury vibes focus too much on being the latest and greatest in technology and stop focusing on just making something awesome. The more "luxury" Lelo gets, the more they seem to screw it up. Insignia line? HATE it.
But dildos....now that's a horse of a different color. It is so very very worth it to pay more money for a high-quality dildo from a local company who has tight control over their product quality control: Tantus, Crystal Delights, Nobessence, Vixen. Njoy is amazing as well, despite being many in China, because they're a small company who tests and re-tests their designs before they hit the market (hence why there's not been anything new in awhile, but will be somewhat soon). The cheaper knock-offs, like the Pipedreams Metalworx line, lack the quality and craftsmanship. Crystal Delights glass toys are beautiful and are exactly what you expected, each and every time. I've owned glass toys from 4 companies and been disappointed each and every time (except for CD).