Found these two product with discount offer at a online Auction sales and I am thinking to buy this but very confused about the design. Please help me with decision.
What's your question about the designs? They are pretty similar. They both have a 'back' side that is taller than the 'front' side, which are meant to have the potential to become the headboard and footboard for a standard size bed if you buy extra side rails, or a toddler bed if you buy a different 'front' side. They both allow you to change the height of the mattress. The fronts are fixed, which means they're not drop-side cribs (now illegal to sell in the US). That's about it.
One thing that may sway your decision is that Stork Craft is very much still in business, while it seems like Bonavita (or whoever manufactures that brand) is not (see
here).