Supreme service by @Richio! I have to say, those PET bottles with the twist caps look splendid. I'm extremely lazy and the thought of a bottle which you just twist open and closed, as opposed to unscrewing a cap and then putting it down somewhere, appealed immediately to me. They looked like they may have quite wide necks so it's even better to have that confirmed as I usually mix straight into my dispensing bottle. I'll be ordering a bunch of these with my next order. I realise they may not be ideal for RTA users as the spout looks a little chunky for most RTA fill ports. But for mixing and dripping, these bottles look the business.