One of the things I like about Brocade is that I have excellent support with them. Yeah, Cisco TAC is the best TAC I know of, but the local Brocade support where I am you just cant beat. One of the local guys here keeps me and the other engineers up to date on what are the most stable software revisions for the firmware. Below is the update for January 2014 if you need to know.
VDX 6710, 6720, 6730 NOS 3.0.1x (latest) VDX 6740 NOS 4.0.1x (latest) VDX 87XX NOS 3.0.1x (latest) FCX FI 7.3.00f (or latest) FGS FI 7.2.02g FLS FI 7.2.02g FWS FI 7.3.00f (or latest) ICX 6430/6450 FI 7.4.00d (or latest) ICX 6610 FI 7.3.00f (or latest) ICX 6650 FI 7.5.00b FSX FI 7.3.00f (or latest) TurboIron 24X TI 7.3.00f (or latest)