Every review I've seen of Spigen cases in general tends to be positive and they do well on drop tests which is reassuring. Personally, I only buy well-known brands as although cheap ones look tough, in my experience they aren't necessarily good enough to protect your phone. My iPhone 6 was dropped from waist-height in a tough-looking cheap case and the corner cracked instantly.
I always check youtube for drop tests too as some manufacturer claims don't hold up.
Anyway, sorry to hear it's not available through Amazon - I got mine on Amazon UK, so it's odd they don't have it on your side of the pond. Amazon are aways changing their stock, so check often and it may well appear. Alternatively, look at some of the other Spigen cases - they do the rose colour on several others - the Ultra Hybrid for instance, which still has corner protection with a sleeker look.
Also, keep an eye on Spigen's Facebook page as they do post discounts there - the last one was for 25% off, unfortunately it looks like it expired at the end of October. It might be worth subscribing to their newsletter as many companies give out discount codes that way. Some youtube reviewers get exclusive discount codes for their subscribers too, so if you watch any reviews then look out for codes mentioned or posted with the description. I found a good one for Caudabe a couple of weeks ago, so its always worth looking.
I'm afraid I have no experience of the Bodyguardz cases, but the 10-feet drop protection certainly sounds good and it looks pretty nice too.