Infini vs. Fractora? Which one delivers better results for facial area?

Photos would have been extremely helpful. In  their absence, I can only comment in the most general of ways.If you are talking about the kind of crepey, crinkly skin that is often seen on the lower portion of the cheeks close to the sides of the mouth, then medical microneedling might be helpful. I have been performing both manual and automatic microneedling for about fifteen years. I find it most useful for blending irregular superficial tone and texture of the skin and for the most fine wrinkle lines. As an aside, I do not think that relatively more expensive radiofrequency microneedling, despite the marketing hype to the contrary, really adds much to the benefits of conventional microneedling. If you are referring to generalized facial wrinkling, you might better profit from a nonsurgical cheek augmentation or The Nonsurgical 3D Vectoring Facelift--both of which you can learn more about by searching the archives or RealSelf.com.For crepey, crinkly skin in the lower cheek region, I prefer to use a series of Restylane Skin Booster treatments, either alone or accompanied my microdroplet placement of Botox. If instead (or in addition), you have instead very fine lines, a filler, such as Belotero Balance, which has very little risk of giving rise to the unwanted, bluish Tyndall Effect when injected high up in the skin, may be used to smooth them. Restylane Skin Boosters, which I use in my Israel satellite facility, is unavailable in the U.S. In my Upper East Manhattan office, I rely upon Restylane Silk for the crepey skin and Teosyal Redensity II for very fine lines. 

Full disclosure here - I own a Fractora and not an Infini. Fractora does have more hand piece options which may make it easier for your doctor to customize the treatment for your skin. I agree with Dr. Novick that microneedling is great on thin, crepey skin. The radiofrequency side of it doesn't add a ton for superficial lines but does really well with deeper lines. Adding in a dermal filler would likely help a lot. Hope that helps!