B+ or golden teacher are going to be your best first timer strains. Perfect potency and quick growers. Most mushrooms are all around the same potency (give or take a little bit); they typically differ in their colonization time and fruiting periods.
This fall I'm planning on doing a grow of cambodians which are supposedly very potent
Yeah,
My first time a couple years ago, not sure what strain I used but I messed up big time, all my jars got contaminated. So this time I decided to get 2 strains instead of one and innoculate only one jar for each strain, it's taking a risk because if the jars gone then its gone, and I only have 2 shots at it but on the other hand the mycelium's alot stronger and can fend off certain molds.
So my Mazatapec jar went moldy the first week but my Golden Teacher is doing excellent. its about 40% colonized and spreading every day.
Should be in the fruiting chamber second to last week of July hopefully.
Good luck!
PS: Be veeeeerry weary of contamination. I used those rubber/plastic gloves, washed my hands, sanitized my hands, wore a mask on my face and worked in a clean environment, sterilized for 2 hours, and even at that one of the jars got fucked... But just be careful and you should be alright.
Happy shrooming