Shift with your right foot I believe comes from activating the kick down on the autobox when you floor the throttle.
As to the great Auto/manual debate I really think it depends on:
Where you live and drive IE mainly town, stop start traffic, do you do lots of miles?
Engine size. Small engines, usually less than 2 litres suffer from a proportional larger powerloss with an automatic box. I have driven both an manual and an automatic mini (the old type) and there was a noticable difference, well they were only 1000cc. That said I used to have a Jaguar XJ6 with a 4.2litre engine and an autobox, went like a rocket. However modern small engines have lots of power these days....
Personal preference. With an automatic I somehow feel I haven't quite got complete control. THe car is doing something without my input, sounds silly but true. My Missus hates automatics......
Guess the best compromise I have ever come across was my Citroen 2CV which had a "traffi-clutch" basically it had a manual box and standard clutch, but also a centrifugal one as well. so in stop start traffic you hit the brakes, the engine slowed down and the clutch disengaged, rev it up and off you went again, brilliant, Rover used a similar system in the 1950's, Saab for the 2-stroke 96's. I think though these systems were legislated out as being unsafe
THen there is all the "tiptronic" systems from Citroen (DS19), NSU Ro80, VW, Porsche etc
Sorry for the ramble
Malc