I'm going to the market tomorrow morning armed with camera, so might get something different then.
As for Siggy's, the only one I've got is the 10-20; at best I would mark it as 'OK' - distinctly soft around the edges at all f stops towards infinity.
As for 50s, I have acquired two second hand what with my diminutive budget; an absolutely superb all manual Chinon PK f1.7 (eBay £12) and a rather nice FA 50mm f1.4 (also eBay, but this is allegedly the third best prime lens ever made, so it was a significantly more than £12, don't tell Mrs H). Using them is just the joy of having a decent prime lens on the end of the camera.
As for a 70-200 f2.8, that's a long way off, but I have nearly saved up enough for a Tamron 90 macro, which will no doubt be regularly deployed hereabouts when it finally gets bought.
Meanwhile, looking for inspiration jinky? It''s been a long time since we had a picture of your Sunday roast entered . .