It won't make a difference. Both HDMI and DVI to VGA will perform the same.
No they won't, HDMI only includes digital, while DVI-I includes both analog and digital. VGA is analog, so HDMI won't work with VGA without an expensive active converter.
If you already have an adapter then it's not a difference. If you're looking for an adapter you'll choose the cheapest one, so while the HDMI ones will cost more you just won't buy it for this.