I bought some paver stone patio sand from Lowe's...a little thicker consistency than playsand and has natural colors to it unlike the playsand which is pretty uniform.. The paver sand gives a more natural look IMHO.
It is a little dusty and you could either rinse it or just fill your tank, fill with water, churn a little to get all the dust up, then empty and refill. Obviously not practical with a larger tank but my 55 bowfront was no problem. Once it's settle and cleared out, dust isn't a factor.
I highly recommend the sand...My plants seem to hold root better and thrive better than my old gravel tank. Plus my clown loaches love to bury themselves up to their snouts in it.
Plus it looks the best, if a natural look is what your going for.