Difference in sound between copper and silver digital cables?

Jorma digital gets rave reviews but at $1700 it's way out of my price range. What common or boutique brands with a balance of richness and detail can be had for ~$300? Notwithstanding the implementation, does silver coated copper give you the best of both?

I get "just try them," but, seriously, it would help to narrow the field.

@ pmboyd

Audio Envy Digital Cable fits your criteria easily and saves you $175; I compared against Black Cat Mk 2, Snake River Boomslang and Revelation and it beat them handily...

I prefer the sound of copper by a good margin but AE copper design is more transparent than several silver cables I tried but just more musical.


Wig

pmboyd, between the personal tastes of audiophiles and your preferences, no one here can direct you to the perfect choice. 

As a reviewer, I suggest you not only consider digital cables, but the companies that most impress you in terms of cabling. I have found that companies I enjoy speaker, power, etc. cabling also make favorable digital-related cables. Cable companies tend toward their house sound, and try to get their cables to have similar characteristics. So, if you like a particular company's power cords, speaker cables, etc. the odds are good you would be pleased by the USB. 

Failing that, a company with wide recognition for quality build and good to superior sound is Audioquest, with many models and price points. I vouch for there being discernible differences between models. 

I now use regularly Clarity Cable's Supernatural USB, which would be outside of your price category. However, the previous Natural USB may work for you. 

I've been trying different digital cables over the past three months.A couple of them were OCC silver which to me sounds too soft and smooth as opposed to Kimber which was edgy and harsh.Furutech (copper) was decent but somewhat smeared the music.I've got an Audio Envy on the way.I do like their ics.
Right now I'm using a Silnote Morpheus lll ($495)and it may be the winner.They do have a couple that are lower cost of you want to check them out.These are gold/silver/copper.There is no smearing and and a very good blend of warmth and detail.I have no idea if it's just the connectors that make the difference,but they do all sound different to me.
Something I liked quite a bit was an old Gabriel Gold ic cable which is also gold/silver/copper.It smeared the music a little and seemed more dynamic with a bit of edge and grit,but I like rock and blues so it made for some colorful enhancement.The Silnote is more refined.In the next few days I'll compare to the AE and see what happens.My two cents,hope it helps some:-)