I noticed I respond better to highER fat rather than high carbs. Obviously I need both, but I need more fat to grow, as noticed from prev. exp, so I would choose eggs due to higher protein count, and higher fat count.
The milk has like 8g protein per 12 g carbs - in any case, the carb count (lactose, a sugar) is higher than the protein. I like to get my carbs from somewhere more filling as bread, pasta etc.
But since youre bulking, treat yourself to both!
note that eggs+milk can give you bad ass stomach pains, avatar. ive had bag exps.
peace