Well the wendt is used by most pros in to NDE and have no promblems with it, its supposed to be a great tool and very effective.
On a personal note, i didnt like the build quality and found it to be very poor and somewhat lacking in design in one or two certain areas then theres the fact that it broke before it even met a lock in anger.
If you have to save up for it dont buy the wendt but if you feel you have to have one then so be it.
I dont use a pick gun and normally use hand picks on occasion i will get the manual one out to losen pins in a lock but thats it, thats not to say i havent got plans for a home made one, there is also an update coming for the latest bosch screwdriver the ixo, it will be a lot better than the old guide and will give you a professional product, i may also sell this conversion for you to add to your own screwdriver
Get yourself to a show or meeting and just have a play with the various ones around, the only thing that puts the wendt above the others is that it has a bit more power to it but all that does is detroy the lock quicker.