I decided on this one, as it's not too expensive (£250) and can be used in Reflex (Over Barrel) and End of Barrel configurations. (Mode 2/3).
Total cost with postage worked out at £268.55.
Ordered it with a Tac break and really looking forward to seeing how it all performs.
Whilst my rifle is in the gunsmiths I'm also having him fit my DBM (Atlas Supplied by Ovenpaa) as I didn't want to risk the stock to hand tools and my Ham Fists, It's also having the headspacing set at the minimum spec, feed ramp polished, tactical bolt knob, lugs lapped... It's going to be an expensive bill... Hopefully be worth it though...!

Anyways, anyone have any reports on the Moderator specified? Any Range time with it? It'll be on a .223 for me, I'll report back when work is done :)