I dont think there is a perfect wand. The hitachi was my first. Feels great, but it is very loud! Also only 2 speeds. Next try I got the Wahl. Rumblier, and quieter, attachments that you can wash, but atill the 2 speed issue and none of the attachments feel just right to me. All feel too pinpoint to me. Next try the inspire wand. Total speed control, detachable silicone head, the perfect balance between broad and pinpoint stimulation! But too loud and the overheating issue limits session time to 15 minutes max! So every wand has pros and cons. You just have to read the reviews and decide what will work best for you. I use my inspire the most, but I still get the others out sometimes! I have been looking at the mystic wand lately. No cord, but way less power.
I think the questions to ask yourself are: How much power do I need? How quiet do I need it to be? Do I like rumbly or buzzy? Do I like broad or pinpoint stimulation?