Southern. I know it's controversial but they are good when their services are not hit for six by Network Rail, which happens somewhere every day literally, & the RMT whose only goal in life is to make travel on Southern as difficult as possible & to smear Southern's good name. The trains are very frequent all over the network bar the guard run services to Ashford & Uckfield. The new OBS, although fairly invisible, do try to make announcements & the automatic announcements are brilliant, clear, correctly frequent & well scripted. The trains are bright & clean inside & out, & some 377 coaches,not all,have first class type seats for Standard class passengers!
Most stations are lovely & warm. Some, Lingfield,Three Bridges,just two examples have libraries & sofas in the waiting rooms. Good luck Southern management.