used MacBook pro

Considering updating from my 2012 used MacBook pro to a fresher one. Most certainly need a 13", 8GB+ and basically 500GB-1TB SSD or the choice to effectively update (so no welded on SSD). 2015 or more up to date appears to bode well yet else, I'm quite simple, I needn't bother with the touch bar or loads of USB C/TB/and so forth attachments. Spending plan up to £7/800.

I'm seriously inquiring as to whether there are any known issues with MBPs in my age/value range that I should avoid.