TGA does have instability and hermaphrodite problems some times, but I have heard even some experienced Cali growers like the good TGA phenos that get passed around in clone form out there. And we all know how many good clones are available in southern California. It all comes down to whether you want to wade through a lot of TGA seeds to find something special IMO. Plus only about 3 or so TGA strains are worth bothering with. I grew out his Pandora's Box and it was very unstable and unimpressive.
On the other hand I just grew out a MR Nice strain and found it pathetic compared to some TGA strains. Mr Nice seeds has the best reputation on the internet as far as I have seen......