I went through the same deliberations in my head before I bought mine. I don't do mostly landscapes, but it also comes in handy for architectural photography. Haven't found anything ugly about it...it's been a good lens for me. Here's a recent shot I took with it (processed a little with DXO). Ultimately, the decision came down to price and weight (especially weight, saving an extra 300g) when choosing the 4 over the 2.8.
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