On the better wheels that are also lighter.

Giant OCR3 with Alex rims on Formula hubs with Kenda tyres were the OM wheels. 6 months into road riding and went down a hill. Coasted from the top and 30 mph reached and the bend required a bit of steering. Problem was that my MTB with Knobbly tyres got to 37 mph on this hill and the bend was a bit more lean. Chatted to the LBS and a pair of Handbuilts with Mich PR2's in 23 and I was back up to 37mph and the bend was a curve with a bit more lean. Not only had the speed gone up- steering was more precise and handling at speed was better. On top of that it added 2 mph average speed to my 30 mile regular ride.

The OM wheels were in no way anything like the best around but just by improving the wheels and putting on a tyre with less drag and less rolling resistance- the bike was transformed into something a bit better than respectable.