It's less cloyingly sweet than the PSL, too, which makes it way more drinkable, and you don't really miss the whipped cream topper either; I can't imagine downing more than a tall, though.
Actually, that's a lie: I can TOTALLY see myself double-fisting this stuff daily, because I’m a glutton who loves him some treats.
If you're looking for a drink that'll one-up the PSL on bombastic flavors, you're inevitably going to be disappointed. If, however, you're looking for a milder alternative to the basic favorite, you owe it to yourself to try the TGL; they're available in participating stores, while supplies last.
Consider it a celebration of the beginning of Fall 2015 -- Starbucks even designed new, seasonally inspired cups, so you don't have to feel quite so basic anymore.