I was going to get a tsu7500 because my 7000 may be developing some problems. However my understanding is that with the tsu7500:
my macros will no longer work because of timing problems and at other times
macros may cancel

In other words I could not apparently expect to download my current tsu7000 configuration file and expect to begin happily use the tsu7500 because of the above problems.

Is my understanding correct? I ask becasue I hate to think of buying the older tsu7000 but may have to because the tsu7500 does not work properly. Many thanks.