If you are looking for our personal, anecdotal advice, which is all we can give because I highly doubt anyone here has coughed up the money to have Syn’s products tested, then yes they are good.
I have very good results with all of their products I have used and bloodwork confirms this.
I used to use Deus and Oxygen but have since switched exclusively to Syn and I love their products. I have/am using Test E, Primo, NPP, Cialis, Viagara, DBol and Anavar from Syn and havent had anything negative to say in the slightest.
Shipping is also fast (2 days) and his response time on emails is very fast too.
If you are having new user anxiety or new lab anxiety dont fall victim to a few people on here bashing him based on “feel” or whatever nonsense.
I also remember reading a long time back how he does test his raws he just doesnt post it (forgot the reason why) but if you want to know to just reach out to him. A quick search also returns Jano lab results of some of his raws.
Hope this helps