Israel is another example of it not working out very well. It's not just the corruption, it's the disproportionate power that small parties get, like the time

Israel is another example of it not working out very well. It's not just the corruption, it's the disproportionate power that small parties get, like the time the Communist party in Italy took out the center-left government because the government wasn't giving them everything they wanted. The party that gets 10% of the vote and is in coalition with the party that got 45% can hold the much larger party "hostage". This led to yet another Berlusconi government. Also, I do appreciate in the US having a representative that is beholden to me, in my district, rather than 'the party', as occurs in many PR systems.