You understand that the FFP reticle covers the same amount of the target on any power right? So at 25x it covers the same as at 20x or 12x. The reticle itself stays the same size in relation to the target. It's no "bigger" at 25x than at any other power. It does appear smaller, as is the target, at lower powers but I found using the illumination helps if you wanted to try that on the scopes you have. I rarely use my FFP scopes that low though.
That said it's not for everyone and if you are just using the reticle for a center aiming point then the advantages of the FFP aren't being used. Vortex doesn't make anything like you want so you will have to look elsewhere.