First off, Starry, there's a good trade in "vintage" taps today. They have to be renovated usually, so don't rule that out if you'd like to keep the tap.
Difficult to recommend taps. It's a bit like recommending a car. They all do the same thing, but in a slightly different way. Perhaps steer clear of the "high rise" mixers...... ie those with a high spout, to avoid splashing.
Have a browse through here for a start...
http://www.plumbworld.co.uk/kitchen-taps-by-style-2348-0000
Plenty of modern taps still operate in the traditional way..... washers; O-rings; seals etc.
The ones with the removable spout that you can use like a shower head are often quite simple in operation.
I think you can safely avoid the "poncey" market and still get one you like that'll be simple to maintain.
SS sinks are still one of the most popular to fit. There have been several love affairs with materials like "Astralite", which people have come to regret.
It depends on the style you'd like. Clay London and Belfast sinks, and French farmhouse clay sinks still sell well.