I have and have had loads of both and could not live without either lol.
If you do go for the colt saa, make sure you go for the pellet version it's an all round better version. A tiny bit more powerful (not that power matters in these replicas) but it's quite a lot more accurate and better made too as it uses a thicker and stronger steel rifled barrel compared to the thin steel smooth bore barrel in the bb version..
I have done a comparison video on my YouTube channel..
To answer your question though what would last longer, who knows it's pot luck these all these replicas some last ages some don't.. Lol definitely get both though..
ATB, Marc..
Some of my favourite guns in. You collection, Umarex Beretta 92fs - Colt Custom 1911 - Walther Lever Action - TM Hi-Capa Custom Build Project - Colt SAA .45 & many more..