This might just come in a little too late, but these are some thoughts about the only wand I've ever tried in various other threads:
"The Lelo Smart Wand Large Rechargeable Vibrator (http://www.lovehoney.co.uk/product.cfm?p=25284), which is very elegant and easy to use. I have never owned a wand before this recent acquisition, but I think it is as powerful as any wands out there if not more, with a much wider choice of experimenting to your taste between speeds and patterns. It is also cordless (and rechargeable and waterproof), which I think takes away the “technicality” a bit. You can get it in white, which at a psychological level reminds purity and is quite inoffensive to the sight as well or in black which will be harder to spot for her with lights off. You can first use it for an “innocent” relaxing massage on her as well as others here have suggested, and this would also take away some of the pressure related to the idea of it being a sex toy."
A thread: http://www.lovehoney.co.uk/community/forums/sex-toys/1237333-lelo-smart-wand-large-vibrator/#p1258955
And another one: http://www.lovehoney.co.uk/community/forums/sex-toys/1262971-wands-magic-or-terrifying/#p1263309
And another one: http://www.lovehoney.co.uk/community/forums/sex-toys/1263890-need-help-choosing/#p1264134
I would never go for a mains/wired toy. I just think it gets in the way. And noisyness too, as far as I'm concerned. I am very happy with my large Lelo.