AmyA - I don't really get on with wands either. Though I do enjoy them for massage as long as someone else is holding them or I find my wrists ache.
I have a few attachments for them, but again I find the wand too heavy to hold for long. Maybe you could try an attachment to try a more pinpoint experience, but I think you may have the same problem as me with the weight.
If you want something different you could try a suction toy.
I've given up on a few designs as I'm definitely more of a pinpoint gal. I got a Zumio for Christmas and love it, but for travel and daily use I recently bought a Red Hot Rechargeable Flickering Tongue (my pooter refuses to do links, sorry), and have been very, very satisfied with it !(upload://h7LJ67OOrR57VDYrj5ZEwwHAfLG.gif)
I have a Tango and it was previously my most used toy as it was just so easy to pick up, use and clean (plus it rang my bell!), but the Tongue has knocked it off the top spot.
It's easier to use than the Tango as it's silicone so doesn't get so slippery. A simple button at the end, like the Tango, controls it. I yearned for a silicone Tango, but even if they brought one out, I now prefer my Tongue. My preferred setting on the Tango was number 3, but I only need number 1 with the Tongue. I don't like patterns but don't need to click through them to get back to the start like the Tango - I just switch it off and it goes back to number 1. Simples!
Back to the OP, I have a shoulder injury, too, but a wand doesn't really help massage wise.