I've got the Kinetic F-16DG/DJ and the Tamiya CJ (and some Hasegawas), about the price, the Kinetic DG/J includes 3 different nav/attack pods, Litening, Lantirn and Sniper, the Tamiya doesn't... And the Kinetic includes also A LOT of modern weapons, AA and AG, CJ Tamiya only includes Amraam, Sidewinder and Harm missiles. Please take note of that when the "money" item is considered.
About the molds, definitely, the Kinetic IS NOT the Tamiya 1/48 mold, it seems to be a downscaled Tamiya 1/32 kit, but just that, "seems".
The good thing of this is that we have a really good option for an Two Seater modern viper (until Tamiya Launch and "DJ" version, i hope so), including a lot of versions available.
Troubles in Kinetic kits? yeah!, is in the Market one "perfect" kit? i think that the answer is "NO", they are just models.
Regards