I'm with you that we need a better option, but Socialism? No way, man.... That's been tried in plenty of nations already, and people are generally free to move to those countries and practice it all they want, if they feel it's so superior to what's offered in America.
Personally, I think there's really nothing seriously wrong with the U.S. Constitution as it was originally written. (There may be a couple of the amendments which arguably weren't such good ideas or could have been written more effectively a different way.)
Most of our nation's problems, IMO, stem from getting away from the core ideas of the Founding Fathers about how the country was supposed to work. The system of checks and balances put in place was effective enough to put the brakes on corruption, but unable to completely stop it (as folks like Ben Franklin predicted and were concerned about). They gave us their "Democracy", "if we could keep it" - and apparently we've let it slip through our fingers increasingly in the last 50+ years.
The problem today is, our government has become such a big "ship" that you can't change its course very quickly. Personally, I find myself standing with those holding libertarian ideals, but at the same time realize that the "big L" Libertarian party has been ineffective BECAUSE it can't seem to distinguish between utopian ideals / principles, and the reality of politics today (compromises are required to make changes, and big changes only happen with many tiny steps).
Where there is centralized power (governance), you'll find corruption, no matter WHAT political ideology you prefer. I firmly believe the people in charge of Socialist (or Communist) nations are just as corrupt as those in charge of our Capitalist system.
The key is to trim central government back to the bare essentials. Yes, it's inherently evil, but unfortunately, I believe (as many do) that it's a necessary evil. So the goal is to always treat it as the poison it is, and minimize its usage.
Right now, the dominance of the 2 party system leads to the occasional libertarian-minded person running as a Republican. So I'll vote for those individuals when I find them and when I'm able to. The party platform they're on is irrelevant, really, except they're leveraging it as a way to remain a viable candidate. The statists who cling to the party are certainly corrupt and need to be voted out, but they're really no better than the vast majority of Democrats running.
It seems to me that one of the biggest complications lies in candidates trying to win votes based on topics that wouldn't even BE issues in a libertarian political scenario. For example, coming out for gay marriage (a favored tactic of Democrats), or concerning oneself with "family values and morals" like many statist Republicans like to tout? These are things government shouldn't even be INVOLVED in, period! A small, efficient central government won't waste taxpayer dollars and time/effort trying to legislate personal lifestyle choices or religious values!
Almost all political systems look great in theory and on paper.... but it's only when they come into actual use, in a society full of flawed human beings, that their validity is truly tested. IMO, Socialism has never proven to work as a "best option" in real world implementation. It simply has no incentive built in to encourage people to better themselves or strive for greatness. It's the same problem we've seen with labor unions in America. Yes, they provided initial solutions to some problems of unfair treatment of workers -- but in the long run, they fail to reward anyone for going above and beyond the rest of the group. We may all be CREATED equal, but our development as individuals takes very different paths after that. I don't WANT to live in a country that essentially promotes everyone being as similar as possible. I'm fine with voluntary inequality (EG. someone lives without much wealth because he/she prefers to be lazy and do the minimum to get by, while someone else prospers and becomes wealthy due to hard work, discipline and constant striving to learn more).
I'm NOT fine with a huge income gap created solely by corruption (paying off people in politics to bend rules to favor specific groups unfairly). But again, I think that's a battle you'll NEVER fully solve, as long as humans are imperfect creatures. You just have to have a system in place that makes such things difficult to get away with.