Congrats on the purchase.....went through the same dilemma as yourself with the TOA but ended up with the TSA-120. Unfortunately work commitments and weather have only allowed a handful of outings with it but I think you will enjoy it
. The 120mm still has some reasonable weight to it I think you will be surprised.
I have seen very little negative feedback from Tak users although Peter here had bad luck with his TOA. It's unfortunate AEC doesn't cater to the same degree as the American Tak dealer TNR but I would rather have a scope sent back to the Japanese factory for repair.