We fly both 700 & 800 and I personally like the 800 more. I feel in turbulent conditions on approach the 800 is less thrown around, more attitude stable.
Some differences in flying:
- descent planning: At usual descent weights the 800 will descent less fast than the 700 and correcting too much height is also more difficult in the 800. This has to do with the 800 having being heavier but having the same wing. If you look at a D-EAS curve a 700 doing 300kts in descent has more drag than an 800.
- flare: the 800 requires less flare than a 700. If you flare the 800 like a 700, you touch down 1000m into the runway
- be prepared for tailwind: be conservative when flying an approach with tailwind as the 800 does not slow down on approach with tailwind (config UP to F5).