... Aldi would floor Lidl within the first 5 minutes? 
I am a big fan of Aldi and I have just made a rare incursion on Lidl... I was very unimpressed: too much stock, too many options badly presented, narrow aisles... The blue and yellow colour scheme is horrid. Hardly anything was tempting although I succumbed to the bars of dark chocolate.
I think they need to take a leaf out of Aldi's look: less is more!!