Any particular reason you want a FFP? Unless you are really going to use the scope for ranging targets of unknown ranges,and actually know how to use a Mil-dot system,the FFP really serves no other purpose.A SFP is almost as easy to use for ranging targets as long as you know what magnification the Mil-dots are set up for.Each mfg has their own system,but you can modify it if your good at math,and use the Mil-dots at other magnifications.
I have both FFP and SFP scopes,and prefer SFP over FFP scopes. At longer ranges,a FFP reticle can cover up whatever your wanting to shoot.
Do yourself a favor and pass on the cheap optics,you'll regret wasting your money. Most of them don't have the adjustment ability to shoot at long range,the glass is poor grade,and they don't track or repeat very well or true.
Save up some money,and buy a decent scope.You'll never regret it!
This scope would be a decent starting point-
http://www.natchezshooterssupply.com/Category.cfm?contentID=productDetail&brand=NK&prod ID=NK6469&prodTitle=Nikon%20Buckmasters%204.5-14x40%20Riflescope%20Side%20Focus%20Mildot%20Retic le%20Matte
If you don't have to have a Mil-dot reticle,you might take a look at the Weaver. I have 2 of these in 6-24x50,and the glass is excellent,tracking is great,and they repeat zero excellent. This was Weaver's top of the line scope before they came out with the Super Slam series.
http://www.natchezshooterssupply.com/Category.cfm?contentID=productDetail&brand=WE&prod ID=WE800708&prodTitle=Weaver%204.4-16x50%20Classic%20Extreme%20Riflescope%20Illuminat ed%20Dual-X%20Reticle%20Matte
Or Weaver offers this with a Mil-dot,but I don't know if they are very good scopes.
http://www.natchezshooterssupply.com/Category.cfm?contentID=productDetail&brand=WE&prod ID=WE849820&prodTitle=Weaver%203-12x44%20SF%20Kaspa%20Extreme%20Tactical%20Riflesco pe%20Illu,%20Mil-Dot%20Reticle%20Matte