TG has 12 aircrafts of 747 type, 6 are new suites (9 suites) and 6 are the single F seat with the ottoman (10 seats)
and the type scheduled is not always the type that shows up.
If seat map shows 9 seats you probably have a 70% chance that you will in fact have suites
for a night flight (MUC BKK) I would definitely prefer suites, on a day flight (BKK MUC) single seats might be preferable as cabin looks more spacious and bright and in particular if your travel with other people better for conversations