I recently needed to re-organize my wrenches so was looking around at many of the options out there (some of which are posted here already). I don't like the tray types for some reason, maybe it's because they don't seem as versatile (custom). I ended up going with the non-magnetic Ernst 40 tool:
http://www.amazon.com/gp/product/B005ZIS8QU/?tag=atomicindus08-20
I had to trim them to fit my tool box, but that's fine, I don't have a bunch of super tiny wrenches anyway, or at least not that are part of a set. I then cut up the HF wrench organizer and used a few pieces out of that for my smaller wrench sets (flare nut...etc).
http://www.harborfreight.com/76-piece-wrench-organizer-46884.html
Here's the result (HF 4 drawer tool cart FYI):
I don't have a lot of history with wrench organization, but during my research over the past couple weeks the Ernst definitely seemed like the best option for the price. For your 43 piece set it'd be hard fitting all of them into one drawer, but there would be tons of space to do two separate drawers, one SAE and one Metric. Personally I like mine organized like that anyway since I really only use Metric. Up until last week all my SAE wrenches were stored away in a small "overflow" tool box that never got opened. Prior to that all my SAE stuff stayed in the original packaging for a couple years after I bought my set of tools, lol.