Depending on the runway, climb performance, A/C weight and if it is a first flight of day, we use up to full flex 81%. For climb, the company SOP is for 210 knts. Most pilots seem to climb in pitch to stop the A/C hunting. Depending on atmospheric conditions, some pilots use their own judgement to climb at an increased gradient or at a low pitch angle, around 5-6 degrees seems to give approx 240knts IAS and above 1500 fpm below fL080 at around 26,000kg, above FL080 3-4 degrees gives a good TAS for around 1500fpm. Makes life easy for the Cabin crew too. Conditions recently have been above ISA +10 so I would think as winter comes speed and climb rates will increase.
Tankering fuel for financial reasons only.
For landing reduced NP is used. Most Captains seem to prefer flap 35 especially if it is an FO's landing due to tail strike worries. However this does mean a marked nose down attitude and vibration. I think 15 would be better on the whole.