*cough*...
100km/h is fast... 100MPH is bloody quick mate. Hope you have access to the velodrome...
I use the Novak GTB 5.5R and i'm very pleased with it. The 4.5 is faster still. Definatley equal to low turn power.. the 5.5R is around 9t range.
The biggest plus for me is that Novak have amazing product support.. Absolutley fantastic..
The LRP product i'm told has a little more low end... not sure about the support though. Both a still great systems.. Having only used the Novak i can only comment on that, but you won't regret it.
Very smooth, lots of power, good battery consumption..
If it's lipo you're after.. then maybe look at the LRP..