I would avoid any soil which has fertilizer in it. Anything that says it provides a certain time you don't need to feed, anything like that. The downside is that stuff that isn't naturally in dirt is something you now have to add, upside is you know exactly what is going on. In fact, your best bet is to mix your own soil. Takes a little research (ph test sterilized soul brands, etc), but the results are better.
another thing to look at is your ph, it is very hard to ph r/o water cause there is no buffer in there.
if you can aerate the water for a day, then ph it, you'll have better results.
I had to overcome issues with using RO/DI water, and you might check your tap water, because RO/DI gives you a bit to overcome. Realize I'm getting 0 tds out of it, which sometimes I don't even see in distilled. At 0 tds you sit right at 7. Changing the ph is as simple as adding an acid or base, there is nothing already there to change things. If it's in sealed containers you don't even end up with much co2, so it really is quite stable while mixing/watering. You will need to add more nutes as well, and possibly more often. Tap water often has lots of phosphates, some nitrates, and a lot of micro-nutes like iron, mag, and the like (varies a lot though, you can usually call the water company and have them send you a breakdown).
The most important thing I found using RO/DI was that my soil really was the foundation of my plant, more so than any other experience with plants. I spent huge chunks of time researching soil, additives, nutes, and ph. Now I mix all my own soil blends based on the what is needed for the brands I get. I also use several additives when watering. I try to stay organic (rational being that there are going to be more impurities of micro nutes in organics), though I am not strict about it.
