i've gotten better results from a coco based mix, it has a few properties that set it apart
from peat. here are a few i can think of off the top of my head-
First, it wicks moisture MUCH better than peat. you can bottom water coco and it will
sponge the moisture up to the top of the pot in no time. because of that, it dries out much
more evenly and you can take less time watering.
Second, the air filled porosity of good coco coir is nearly perfect for a standalone medium.
that's why folks use it DTW with such success. General Hydroponics 5kg cocotek brick is right
around 30% AFP. Adding some compost then more porous material to get it back to approximately
that AFP means you have a soil that maintains a proper air/moisture ratio throughout the entire
medium. It's hard to have an anaerobic spot because of that. You would basically have to leave
huge chunks of compost unmixed and over-water the hell out of it.
Third, it is available in bricks. While that may seem silly, if stealth is an issue it can be very
handy to be able to conceal your growing materials in a storage tote, backpack, or laundry
basket when bringing them into the house.
Now on to the negative. It is a picky bastard about calcium, I recommend adding azomite and/or
local quarry dust high in calcium and magnesium. If you can't find a rock dust with high levels of
magnesium, you can always add epsom salts in your water.
Breaking up the bricks can be a pain in the ass, but they are cheaper than the bags of loose coir.