No I haven't tried. But what I have read and watched in videos. It is a decent build by Aerosoft. It has a very good flight dynamics but not every system is modeled. A true fact about FSX is, it is mainly a civilian sim. A very good review of all the systems of Aerosoft's F-14 in the following youtube playlist
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About LN. Look at the mig 21. It is considered the 2nd most complex aircraft in DCS after A-10c. The LN's F-14 will be superior from Aerosoft's one. That includes system modeling, flight dynamics and combat weaponry. You can further check their site here. I think it is not finalized. but they have given some information regarding weapons