Before I purchase

First, there are a ton of great options in this area, so why just these two?  Second, before anyone here could give you even any semi-useful advice you need to share what's important to you from a sound reproduction standpoint and/or what you're looking to improve upon.  Third, you need to let us know what your other components are to see what may or may not be suitable, especially speakers but everything else helps too.  Because as we all know, the final result is ALWAYS the combined product of EACH individual component and how they interact (the magic sauce).  The only two absolutes I've ever believed in this wonderful, awful hobby are that EVERY link in the chain matters at some level, and that the chain is only as strong as the weakest link.  So if you share what's important to you, what your ultimate personal goals are, the equipment you currently have, and I should add VERY importantly your room characteristics, the better recommendations you'll get on how to complete your own personal and optimal audiophile chain.  Bottom line -- the more you give here the better information you'll get.  At this point you've given us is, well, virtually nothing.  The good news is that there are many, many very experienced people here who are literally aching to help point you in the right direction.  The only thing they need is a fairly accurate map.  That's on you.