there is no way I would have made it through the last year without my exersaucers. With all my babies I had to use them (I had 2 upstairs and 2 downstairs) just to make sure they were safe for potty breaks, lunch prep, craft time, and even outside once in a while. I think I read somewhere that it's bad for thier legs to be in one for longer than 20 minutes at a time, so I used them short term only. Besides I love babies on my lap whenever possible anyhow
A bouncy is great before they can sit in an exersaucer. I only have a small portable swing, didn't use that is much. I only use my pack-n-plays for sleeping. If you're thinking about taking babies at all you might want to keep them--or keep them for the one you're trying for!