I've a 7000 series Inspiron. Great cheap laptops, but the build quality is absolutely terrible. 3 touchpads, 1 keyboard and now the battery is dying. They are cheap for a reason - They are the HP of 10 years ago.
Not entirely sure on this exact model but if it's the 7570, which sounds like it from this link, then it is an IPS panel.
If not bothered about graphics card, this is a better deal and finished product I5 8 gen at 700 at Johnlewis or 600 at ao with cashback and discount code Or the same machine with i7 at Currys Ebay brand new for 750 http://www.google.co.uk/shopping/product/9954106839240731400?lsf=seller:80823,store:952105825960022061&prds=oid:1637725439158919598&q=lenovi+530s+ao&hl=en_GB&ei=nU-lW-nAIqTKgAaL7J_4Cw&lsft=gclid:EAIaIQobChMIoMvdkPPM3QIV67XtCh0npAVTEAQYASABEgKeaPD_BwE
This an IPS panel or a crappy TN? I'm assuming the latter.
Depends what MBP you're looking at, although the closest MBP price-wise is the base spec (granted, better screen) 13" at £1.2k which is around 0.7KG lighter. Worth looking at the 13" Dell variant though (linked in description) - same price as the above but 16GB ram and same/similar weight to the MBP.