I have never had any problems getting nitrous chargers to fit into soda siphons before.

It's way too fast acting to be of any value to me. I see no fun in a drug that you can't stand up while using.

If you have evidence that I am wrong please post it but in my experience 8 gram n2o cartridges fit in the exact same devices as 8 gram co2 carts.

Is this something you have actual experience with?