Saint for real estate purposes East Coast covers the old 15th district, more specifically Katong, Marine Parade, Siglap and Tanjong Rhu as you can see from the
property adds on local newspaper or for example this very site:
http://www.singaporeexpats.com/singapor ... ctures.htm
and Pasir Ris belongs to the 17th Far East, so there is a difference.
As for the original question, I’d say East Coast is better. More lively than Pasir Ris, which is really already quite faraway, though MRT helps a bit if you stay close to it. But for bars depending on your taste you might prefer something in the city. I’m in my mid (?) 30’s and quite often in the east coast bars I often feel I’m the only one who doesn’t have memories of the rise and fall of the beatles. Not that I mind hanging with old people.
In the east coast park you can do pretty good and healthy pub walk from Parkway to Siglap with at least 4-5 bar stops on the 4-5 km walk, so ends up healthy drinking in my books. I do that walk always with new visitors at least once. Or cycling to Changi V and back for a few well selected beers at Charlie’s Corner.
It really depends alot where you need to go to work daily, if it’s in the city east coast is fine, if it’s in the west side it’ll be somewhat painful to waste time for travel every day.