Really surprised there's not more noise about the LTWOO ER7 groupset, with discounts I managed to get it for £278.37......

it's got a the different rear mech without the swinging link, the front mech looks very similar to the ERX and the shifters have the newer ergonomic hoods and levers - they are probably alloy levers though.

Now on to the shifters and some other subtle differences, there is a bluetooth function that does not appear on my Gen 3 ERX levers that allows the app to update the shifter firmware, also I can only get the ER7 rear mech to pair with the supplied ER7 shifters.

I tried to pair the mech with some EGR shifters and it won't find them - however I can get the new ER7 shifters to pair with the older Gen3 ERX mech

Also firmware - my ERX mech is at 1.7 and the ER7 is at 1.2 - for some reason I was thinking they'd be the same because i'd assumed the internals would be the same, clearly not.

Other changes, the rear mech has an extended cable port and a cable loop clip, and the function button seems to be in a much more convenient position.