If you're looking for an alternative to Bread Talk, and maybe slightly cheaper breads that can compete with theirs, check out the mall nearest you if there's a Dough Joe branch there.
One just opened at Robinson's Place and they were selling bread at half-price as a grand opening treat. Their cheese floss is just as great (plus, it had cheese inside the bread). Their tuna floss had cheese and floss on top and tuna flakes inside the bread.
Skip their coffee bun though if you love Kopi Roti's because it has this coffee custard something inside and minus the lovable crust of Kopi Roti's Kopi Bun.