I like both of these and the choice between the two depends on the kind of image you want to project, and the kind of work you want to be doing. Both of these will work OK online.
As others have said, the raster pic and the pastel colours could be a problem for printing but there are ways around this. You said that this is only for use online but why limit your choices later?
The pastel colour is no problem as long as you are prepared to pay for spot colour printing. This will add at least 25% to the cost of any printing you get done.
The raster pic will need a really good clipping path unless you want to use it solely on a white background. As it is, the clipping path would have thousands of points so you will need to simplify the outline. For mono jobs it would be ok in grey. White out of a dark background it will look like a negative which will look really odd.
As with any logo design, you need to consider from the start how it will work in black + white, and white out as well as in colour.