I swapped out a RRalf on the front for a Bonty XDX.
Wow! It almost caught me out a few times, so quick & willing was the front end to turn.
It's most definitely a taller (sharper) profile than the RRalf, which seems almost flat by comparison.
It might be the same for 26ers too - but last night it was a 29er tyre that I tried.
Any others that speed things up?
