I'm generally an advocate of the Jane Austen Tarot (I have it, and I read with it, and for me, it works, but it's not for everyone), but I will---for de-enabling's sake point out its weaknesses, as well.
It has a few: (1) it's really not good for anything except relationship readings or things intertwined with relationships. So, it's not an all-purpose deck. Try and get a career reading with it, and it'll drive you batty (2) the cards break down a bit easier than most decks, as they don't seem to be 'coated' but rather the same material as everyday playing cards, and (3) the cards have silly suit names sometimes (wands are candlesticks, swords are quills, and cups are teacups; coins are mercifully still coins), which personally I think is unnecessarily weird. The Tarot Court also has slightly weird names (Maiden, Knight, Lady, Lord), which is less weird, but still kind of unnecessary. I'm not a fan of gratuitous name-changing. I don't mind it if it serves a clear and important purpose (i.e. renaming Judgment as Aeon, which changes the meaning a bit IMO) but if it's just to be clever, I die a little inside.
When I asked a friend what else was unsettling about the deck, she mentioned the fact that a lot of characters---the same people---appear on cards that seem to be unrelated, and that can get confusing (i.e. Elizabeth Bennet, a character from Pride and Prejudice appears on The Fool, but she's also the Lady of Candlesticks and the key figure in the 7 of Candlesticks, as well as on several other cards, which is a little "The huh?"). Some of these connections make sense...but seeing The Fool as the same person as The Queen of Wands as the same person as the one doing the fighting in the 7 of Wands would be a bit jarring perhaps to some readers.
The Russian Tarot always looks like it doesn't want to be read. Maybe just me, but it always seems to be telling me it has no desire to be party to such pursuits. I agree with those who say it's hard to see, as well. Pretty and it seems to have some depth, but it just feels so distant. I know I couldn't read with it.
I've already bought my allowed decks through March. (Got November's late and January's early, so recently started with the Vanessa and still waiting on the Druidcraft to arrive, and I only buy them every 2 months.) But I really really really really all of the sudden want an aquatic deck. Tarot of Atlantis or Tarot of Mermaids are both calling to me. I'm also really jonesing for the motherpeace tarot, but I think that's mostly 'cause they're round. How fun the different degrees would be to read... I really need to be de-enabled, especially on the Tarot of Atlantis. Which I really really want to buy.