stable, shmable! TGA has some elite clones and hand selected crosses that he uses that are high quality! the opposite of stabilized, BTW , is hybrid vigor. i'd rather smoke that than a watered down bottlenecked strain. so far, the 5 pack of jack's cleaner 2 i bought is THE best named strain i've ever smoked back to real cali-grown columbian gold (misnamed thai for brand recognition, but easy to find out with the internet & verification from a cali resident that was smoking the same back in the day).
i will feel much more confident about trying another TGA strain in the future as the only bud i've blazed of his so far is right outta the ballpark awesome. maybe sannies' jack f7 is even better. i'm ALWAYS looking for the best indoor highs. anyone that'd call TGA schwag is likely a hater with an agenda.
if you want a stabilized strain, back cross a hybrid and then you can even select for the phenos you like best. a strain with hybrid vigor gets a free boost in potency just like jessica alba is hot.