We actually have a reputation for recommending other product lines which we do not carry, if it would better meet the needs of our client. We just like helping people with our year of experience and letting the sales fall as they may - and, we know there are probably a million reasons why that is not the right way to grow a business - but it makes us happy.
Anyway, please kindly know this as it relates to light control. Inside mount, horizontal blinds in the fully-closed position will let light in on the sides (light bleed). Inside mount, vertical blinds in the fully-closed position will also have light bleed on the sides and on the bottom. Outside mount blinds will have light bleed around the blinds. Slatted blinds will have light bleed between the slats and through the route holes. In addition, due to the nature of slatted blinds, the slats will close tighter at the top than the bottom. This will be most noticeable in longer blinds. Also, horizontal blinds ordered as multiple blinds on a single headrail will have a 1/4” gap between the blinds.
We hope this information helps. Maybe you are ready for some new wood blinds for your space in which case we would love to help you. Also, for a rough idea of what your project might cost, check out our online wood and faux wood blind calculator.