sling recommendations

We are having our second baby on Friday (woo!) and I am looking for some recommendations on slings for carrying him around. We have an almost 21 month old as well so something easy and quick to use is best. Would mostly be used when going to the grocery store. We did purchase a double stroller however our car is too small for the stroller and groceries (ugh) I would prefer a sling type carrier instead of a wrap (we have a wrap from our first baby and I hate it. It's too complicated)