I am based in India, so Amazon.in has a low-price Indian edition of Young & Freedman while Felder & Felder is the original US edition which is quite expensive.

I have decided to get all (the seven i have listed in my post above) of John Dirk Walecka's books since low-price editions are available and they seem quite rigorous with enough depth to boot. Pairing it with some other easier text (perhaps Young & Freedman) would cover my bases nicely.