router bit guarantee

i have read questions about MLCS router bits and i to had some resevations about them allso. i have several brands (well known) and wanted to try the MLCS and found them to be a good bit for the money.
one of the bits that i had bought was a 1/2 * 8deg. dovetail bit. i had gotten this bit for doing sliding dovetails. well i first rough out with 5/16 stright bit to remove the bulk of material, then go through the dovetail bit and well 3 1/2 in
and the bit broke of.
since MLCS has a 1 year guarantee on that brand i called them and its true about the guarantee the new one on its way.
i did make one change for 2 dollars and got there KANTA brand which has a life time guarantee on it and a better grade of carbide. i work mostly with oak and brazilan cherry, the brazilan cherry is tough stuff.
so www.mlcs.com