Imho EB is more trans-seasonal. Turquoise is a beautiful color, but is very spring and summer. EB you could carry year round. Good luck finding an EB since I don't think I have heard of any stores having them unless they get a return.
I'd go for EB. Like ronsdiva said it definitely can be worn all year round where as turq. is more of a spring/summer kinda color. I'd call BalNY. BalLA had only an EB RH Day the last time I talked to them 2 weeks ago (when I bought my EB SGH PT) but my SA said that BalNY had some stuff in EB in Giant Hardware. Good luck, I love mine and definitely think its a color worth investing in! Goes with everything and can wear year round!