I am not sure if you have noticed but a lot of the guys that post here from Gulfstream make up Sh!t as they go. Someone posted that they were planing to keep 1 or 2 1900's down in FL as spares as they face in the SF340, I guess they don't understand the nightmare that would be created to maintain crews qualified on 2 aircraft, or maybe they are suggesting they will keep spare crews also! One airplane would be logistic night mare and a huge overhead (for a single ship), the operational fixed cost for other aircrafts will be minimal. Also they have been posting here about the FAA limiting the cycles on the aircraft, I am not sure if those numbers affect a non transport category aircraft! What is happening is that as these airplanes reach their heavy checks their expenses are starting to mount up and with current fuel prices it might be beneficial to fly a larger aircraft when all the numbers are considered!