Actually I like the scope in the Modis, it was pretty easy to use, just snap on priced..
I want to find a good alternative,the pocket DSO is cute but tough to see, I am going to explore a slightly larger model of somekind.Thing is, I dont have to deal with it as a necessity as a field technician , using a scanner with Bi directional controls helps me narrow down most OE trouble that crosses the doorway.And with OBDII code definitions are pretty definitive and make it simple to arrive at a conclusion as to what the fault is.
Last time I needed an O scope was for a 94 Mitsu 3000.Code 12 for maf was stored with no MIL. The MAF was dead. It wouldnt Idle when warm as the IAC would slam shut. Seems an O scope is needed more as a diagnostic tool for OBDI cars than OBDII, well at least untill you start looking at CAN messages. But then again bi directionals are a big help to a flat rate guy.