Did look at that a while ago but couldn't find one
The Novritsch looks nice enough, but it's marked as 'out of stock' for both the polymer (EUR 229) and metal (EUR 299) variants. So unless you're prepared to wait for them, DE would seem to be the best bet.
Amazingly enough, BBguns4less seem to have been consistent for a while in actually having DE's in stock...
https://bbguns4less.co.uk/products/double-eagle-m907d-ar15-rifle-with-falcon-system-in-black.html
Here's the shorter. less expensive variant that I run (and has been great for me)
£189 is about as cheap as it's been anywhere for a couple of years now.
https://bbguns4less.co.uk/products/double-eagle-m906c-ar15-rifle-with-falcon-system-in-black.html
If you'd rather go with Patrolbase, they have this one
https://www.patrolbase.co.uk/airsoft-m4-ar15-m16-variant-assault-rifles?*brand=61&*inst=y
Edit:
The only thing that a couple of us have had issue with is that the stock spring seems to become weak and inconsistent fairly quickly. Thanks to the fact springs are cheap (get an M105 for £10) and the Quick Change system works beautifully, its' a super-simple fix.
(The motor also tends to get a bit toasty on extended full auto fire, so
some day I'll get around to changing mine. While it works though I'll leave it as-is!)
Edit:
I see the Rate Of Fire on the Novritsch is a big step up from the DE's. That and 'pre-cocking' seem to be the main advantages over the DEs. My 906 runs at about 16rps on 11.1v, so it's not a massive gap, but the choice is yours...
