The Committee for a Responsible Federal Budget has created a useful tool for comparing the various budget-reform plans.
A recent CRFB blog post on the long-term budget outlook also has helpful explanations of the differences between the CBO's "extended" and "alternative" baselines. I agree with CRFB that the most plausible starting-point probably lies between the two. (The extended baseline isn't going to happen. The more pessimistic alternative fiscal scenario is probably too pessimistic.) The CRFB's own "realistic" baseline essentially splits the difference. They intend to update it shortly.
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