There's also this MSOX4154A on eBay (no probes; limited apps) for $9,116.40 . I don't have money to buy it but (for future reference) is it an exceptional deal? Or there's better to be had?
The 4000 series is more or less the same as the 3000A series with a larger screen.
If you are looking for an upgrade, look at the 6000 X series, that is a real upgrade from the 3000 series.
The apps/software for 4000A are just a bit more extensive than 3000T. I'm not sure if there's any difference in probe support between 3000T and 4000A series...
It is actually the other way around. All the options for the 3000T and 4000A are identical. On the other hand, 4000A has full Autoprobe interface, while 3000T has limited current, so you cannot use all the probes and cannot use some combinations because you run out of current budget. It is explained in detail in interface and accessories datasheet.
Also 3000A and 2000 series are based on same software base. That is why 3000A doesn't have same options as 3000T.
3000T and 4000A are based on same software base, hence all the same software options..
There is still not much details about new software bundle policy, but it seems that Keysight will , in addition to current options, offer an subscription based, and floating licenses for Infiniivision series.
Hence the new option codes. I have yet to see Keysight new official explanation how it will work.
Maybe Daniel will come up with a little explanation/presentation.....