Reflex M or C for DL-103?

Hi and welcome to the forum! Though there are undoubtedly much more knowledgeable people here I'd like to still try to help out. First, while the Elevator is a much more extensible and conveinent solution to almost any SUT out there, if you know for sure you want to stick with MC primarily and reduce cost impact then you should at least check out the Cartridge loading plugs topic.

http://audio-forum.gspaudio.co.uk/cartridge-loading-plugs_topic1246.html

It's really cool knowledge and a great starting point relating to your inquiry, still whatever you do, try to get some confirmation from someone more experienced than myself. I don't really know how much this applies to strictly MC setup's without a SUT like the Reflex C but since it has a primary loading of 100 ohms it seems to me that would be all right with your particular cart. Still, it's cool to know what you could do to properly adjust an audio setup just by modifying the cables.

Regarding your second question, CuSat50's or Lautus phono-style cables, as short as you can possibly get away with, should be ideal for any average non-balanced setup. Not that I'd ever cartridge load a cable as nice as those though, just an unrelated suggestion. Hopefully this can help point you in the right direction.

Best of Luck.

Whoa - and then I read this....

Yeah, if I saw that Reflex C topic I'd have referred you to that too. I've not posted on here in a while. A more relevant insight to your inquiry? Absolutely. A 'total bummer'? Not necessarily, maybe not at all. I'm sure you'd rather know that than not, I do. It's that kind of insight and no nonsense honesty that drew me into GSP in the first place.

In fact, after reading that I'd be all the more inclined to try to get a chance to hear what the Reflex C offers at about half the price of what the combo goes for just to hear what sonic differences that happened to be designed into it that you might like. Yes, from reading that it does seem the combo is a bit more capable, and way more versatile, over the whole of the MC spectrum. But some of those carts are also way out the realm of traditional design so their compliance, low-output and/or price point are on another dimension all together. At 0.3mV your cart just seems to fit safely within the recommened range. There may or may not actually be a big enough difference to otherwise warrant spending that much more for features you won't use in the combo. Who knows? Maybe there could be a nice-enough of a 'lo-fi' charm to the very bottom end that you find if such traits do show themselves in loud bass heavy music. Graham's always been very forthcoming with various aspects of the design and evolution of his products with regards to how it affects the sound. That's why I have full faith in the integerity of the product and what it has to offer.

Head scratching indeed, but all is not lost.