I have been able to get by without a baby carrier so far but now that it's summer and we're taking DD out more to fun places, I need a carrier because the stroller is just too much a hassle. I have a Baby Bjorn that was given to me but I never did like it. It always strained my shoulders after 10mins. I read a really good article that reviewed multiple carriers and I've narrowed it down to the Ergo and Beco Gemini. I'm leaning more towards the Gemini because it looks smaller as opposed to the Ergo looks like a spacesuit attached to you (maybe not that bad, but it does cover your entire torso). Looking to hear about experience with one or both of these. Is it really still comfortable on your shoulders as LO gets older? DS is 17lbs and DD is 27lbs.