You're most welcome. Glad to see you're going with an EHLE - you won't be disappointed in the slightest I'm sure.
The diffuser I own is indeed the first one you linked (not sure about the pre-cooler one being any different either) and yes, that's the plug I'm using for my carbhole. You might...
I'm by no means a GonG expert but as far as I'm concerned I think the whole carb vs slide argument boils down to personal preference in the end. The kick-hole allows you to quickly clear the pipe of smoke without having to slide your bowl/WPA. Not having a kick hole means you'll need to lift the...
I actually just bought an Ehle bong off that website. I highly recommend them, service was super quick.
This is the one I bought for use with the WPA/WPW
http://www.head-nature.com/tree/3019/Ehle-500ml-bent/article/03287-ORANGE/Ehle-Icebong-500ml-14.5mm-Orange
You also need to get a...