Don't take this the wrong way....
If you are still concerned with the flight characteristics, you need more time flying, to make a decision. When you get your hands, it wont take long to sort out any intermediate.
The parts issue you hear of...is a commercial operators issue. Nothing you do in 100 hours per year of private flying, should impact a parts/service with bell or eurocopter.
Power = $$$$
If you have the ability to fly a 120, and make it work within its limits (safely)...that is the best bang for the buck. But it takes skill and time, to get the most out of the machine. Many commercial operators do wonders and very well with 120's
If you want to rush in...spend the money, buy a B2 and you will be safe, and have twice as much helicopter as you will ever need in the private sector. Not at all a bad decision!!!!!!