Thinking about going bioactive

[sockSnek]

I've been doing some research on switching to bioactive for my corn snake, and I have a couple questions that you guys might be able to answer.

1. Whenever I try a search, the company Genesis Exotics is always up there in the results, but I can't find any reviews of any of their products or really anything about the company itself. Can anyone tell me anything about them? Are their substrate mixes any good? Their starter kit for a 40 gal terra firma is 144.95.

2. Speaking of which, how much should I expect to spend on this (excluding plants)?

3. I've found a lot of guides of what to use and how to set up one of these enclosures (some of this forum), but there's a lot of information and I'm still left with a lot of options for substrate, plants, drainage layer vs no drainage layer, etc. What's your favorite guide to follow what has worked out for you?