I've been flying the Archer II/III for nearly 3 years, and I've found that the key to a smooth landing is definately correct speed control! You certainly do not want to be going faster than 65kts on short final because it will almost certainly float, or touch down flat.
A normal circuit for me goes something like this:
Downwind: 2000 RPM, 90kts clean
Base Leg: 1500 RPM, Speed in to white arc, 25deg of flap, descend to maintain 80kts.
Final: Full flap, reduce to 70kts
Short final: trim for 65 kts, adjust power to maintain profile.