I dont own FLI gear, and Greg has had both so he has experience at least with older model SBIG
The new STF is a hard package to beat.
http://www.sbig.com/STF-8300-Pro-Plus-Package.html
Package includes the STF-8300M camera, FW8 filter wheel, off-axis guider, St-i Mono Autoguider and Planetary Imager and 36mm LRGB, 36mm Clear H-alpha, O-III, and SII Filter Sets.
Price all that up after you buy an FLI and you wont even be close.
Nice thing about the OAG with sbig is it has a built in Focal reducer as well so you get a wider field with guider.
I ordered this exact package a while back from Peter Ward. Shoudl arive in a week or two so will update then.
Either way you cant go wrong.