We like both places and below is what my impression are after a very short viewing.
Seacraze; Pros, supreme location (IMO)

Cons, a bit longer distance to my wife's work location, but nothing extreme.
Baan Kiang Faa; Pros, seems brand new! Security card to get admission to the building and the condo we viewed was spot free and clean as new.
Cons, Location (IMO) near Petkasem road and construction just outside the entrance which for me was a big minus but I believe the construction not will last forever so it will be wrong to make conclusion based on that alone!
Any input welcomed.
Thanks
Hahuahin