OP
I paid him £60 for the Erbauer and it came with 2 x 4Ah batteries ( Screwfix only seems to come with 1 battery )If you had to pay the new price for the Erbauer .... This would be the better buy for not a lot more
DeWalt DCF787D2T-SFGB 18V 2.0Ah Li-Ion XR Brushless Cordless Impact Driver - https://www.screwfix.com/p/dewalt-dcf787d2t-sfgb-18v-2-0ah-li-ion-xr-brushless-cordless-impact-driver/489hp I have it with same batteries and some much larger ones. Even with the Kit batteries , it sure can sink screws..... Now here is a very over looked issue .I know people that are tool tarts . But skimp on using quality screws and the RIGHT types ! This make a HUGE difference . A cheap screw is not worth it in the end !!
As yo say for full retail price of you might as well buy dewalt or makita
Yes I agree the correct bits and decent screws are as important as what is smashing them in, the amount of lads I see on site driving in screws with the wrong bit is frustrating , especially when they mangle the heads and the next bloke would have zero chance getting the screw out