I have had a Hawk Pro since they were first released. It has been powered by an OS32SXH, a Toki 40 and now an OS37. It now has over 500 flights on it and is still going strong. Due to how well it flies and how easy and inexpensive it is to repair, I have used it as my go-to heli when I practiced new things. It got me through my first flips, my first 360 degree autos, first backward and inverted flight, first funnels etc.
The power to weight ratio (specially using the older OS32) is not nearly as good as on my electric Swifts or larger helis, but this taught me how to better manage my collective and cyclic.