Yes a good sim is pricey but you can completely rebuilt after a crash by hitting a button and all rebuilds are free ! I don't know what your budget is but I know it's discouraging to continually have problems but stick with it, we've all been down that bumpy road. I started with a Raptor 50 and training gear. Once I was able to hover and land, I took the training gear off and started on forward flight. Then everyone started getting the little electrics so I bought my first Trex and put some cheap electronics in it. Learning to fly that thing was harder than when I first started, So yes, size does matter . If you learn on that little electric then you won't have any problem switching over to a bigger heli later.