We just got a 10-month-old F5 Savannah, and really wanted to train her to use the toilet. We've always had cats, and I've always hated cleaning the litter box.
So we bought Litter Kwitter, a super easy way to train. Scout loves water naturally--so maybe that helped in the training--but she went...
This is a great article, outlining the two types of declawing. I think if it comes down to a cosmetic declaw or surrendering the cat to the Humane Society because it won't stop scratching your furniture, I would go with the declaw...