That AT Kieth posted may be a lot cheaper than the Innova 3340a.
Advantage digital is that its easier to read - as long as your readingsomething stable.
The thing to be careful about with either is making sure the multimeter is set on V DC when the circuit is live, not on Ohms for resistance. Only make resitance and continuity checks when the battery is disconnected. It took me a few times to have that reinforced...