Good evening
I took my 900 EX conversion in Dallas in 01/01 and recurrent in Teter from then .
As in every school , a lot depend on the instructor as it has been said above .
The SIM worked properly in both site with some minor restrictions but I think that's what hapenned with all modern systems.
For info it is "ALTSEL" for "altitude selection" which doesn't look so bad for me !
Every thing can be always criticized but overall I honestly think the course in Teter was much better , as the instructors knew the system very , well which was not the case in Dallas ( but it was the first course on 900 EX )
CE