Evernote has a free version also that has even more functionality than Basecamp Personal. I'm not saying Evernote is the perfect alternative, that was just an example of many.
I guess I'm just getting to the point that there is lots of alternatives out there that give much more value for a better price. I feel like 37signals is trying to sell products just because of their name and are no longer put real value in their products. Or at least putting enough value in to justify the price tag associated with their newest products.