New Garden Shed - T&G or shiplap?

I am looking for a new wooden garden shed. What do you guys recommend shiplap or tongue and groove? The prices are very similar.

 

If you're going to run the boards horizontally you would use shiplap as the water will run down the profile.

 

This link gives a fair descripton of both - Shiplac would be our choice, looks nicer.
Shiplap vs. V-Groove: Which Tongue & Groove Profile Is Best?

There have been a couple of longish threads here about sheds, you might find some good info -

New Garden Shed Build

There is a very long thread by @Fat Controller about his new shed as shown in that link above but cannot find his link just now - perhaps he might add it .
He bought his from here -
Garden Shed | Pressure Treated Sheds | Project Timber

 

Is this the thread @ricky101 ?

Sheds | Gardeners Corner - The Friendly Gardening Forum

 

Yup, thats the one

 

I picked up an ex-demo shed today with shiplap. Hope to use a coloured paint for the exterior of the shed when the weather comes, any recommendations on a durable brand?