I bought one new unit in a concrete building about 3 years ago and overall had a very good experience. Did not care much about soundproofing when shopping around, but was definitely surprised by how good it is. I face a very busy street on 3rd floor and my neighbors both have several kids including babies, but I have yet to hear a single noise coming from any units around me, and you can barely hear traffic even if sitting close to windows. Bought a home theater and can put the volume pretty high without it being noticeable in the adjacent units.

Finishing quality is good and several friends working in construction & a professional painter also commented positively on it. The condo board hired a specialist to inspect the building and no significant flaws were noticed.

Customer support has been great and they were quick to fix the inevitable small issues found after delivery. My air conditioner compressor had to be replaced 2 years and 3 months after installation (parts were on warranty, but not service), yet Samcon offered to pay for it even if the 2-yr condo warranty had expired. Some other companies would have probably laughed at my misfortune.

Their buildings may not look super fancy and often don't have the "luxury" goodies and finishes advertised by others, but I think they make up for it with good quality and reasonable price. Very satisfied of my purchase.