Garment Bag Vs Suitcase For Suits

The Samsonite wheeled garment bag / suitcase that I presently have is simply not long enough to accommodate by suits, which is deeply .
Travel Products – Garment bags – I have never used a garment bag before but I find myself wearing jackets/suits more often now.. garment bags regularly, what are the pros/cons in using a garment bag vs a large suitcase?
My husband has always used a garment bag for his suits on. for new luggage and I was wondering how the "suiter" suitcases compare.
Suits, especially jackets, require the neat, flat form of a garment bag.. Consider whether two suitcases will carry as much as one garment bag and one suitcase.