I used First strand from Roche when working with yeast RNA, but it is too expensive compared with others. GoScript manual indicates that perform high yield RT also in the presence of inhibitors so as now I am working with RNA from environmental bacteria I took it into account.
A really good study on this was published by some colleagues of mine at:
http://www.sciencedirect.com/science/article/pii/S0038071713000187
Hi, we are using SuperScript II or III from Invitrogen, it's easy and works well with the RNA from soils. Used the obtained cDNA, after purification, for PCR just in the same day or keep it for a couple of days in the fridge, at 4C.
The most important point is to use a good kit to isolate the RNA from soil, there are many in the market directed to this type of samples. Then, almost all good RT enzymes will work well.
I use First strand from Roche although many colleagues use Superscript from Invitrogen and it works well too.
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