[amsat-bb] How busy are the linear transponder satellites?

I know that the FM satellites, primarily SO-50 and AO-85, can be quite congested during a pass. This is understandable, since each satellite presents only one channel. On the other hand, the linear transponder satellites can support multiple communication channels, due to the available bandwidth. This ranges from 20 KHz (XW-2A/B/C/D/F) to 100 KHz (FO-29, AO-7). From your experience running SSB, how congested or how utilized, is the bandwidth of these satellites? Is there usually plenty of room to spare, or is it a challenge to find a place within the available bandwidth to conduct a QSO?

Thanks and 73,

Mac Cody / AE5PH