Hi i am about to upgrade to A7 Com and was wondering what people who already got it have found to be the best way of making levels.

1.Block levels whit model details.

or

2.Mesh levels whit model details.

I am going to use a lot of models and shaders on about every one of them also on the level geometry.

Any problems whit shadows from model to model lighting problems any other problems i should know about?

Thanks in advance..