Hi Russ, Your decision will hinge on whether the 10MHz frequency response of the 3224 is high enough for your needs. If it is, go for the 2 chan 3224 or the 4 chan 3424 12 bit scopes. If you need speed more than resolution, go for the 5203 250MHz, 8 bit scope. At present, the new PicoScope 6 softwar...