Many people have good experiences with cheap long run HDMI/DVI cables.
I would avoid Supra, since I was going to get one, but they had been withdrawn since there were problems with them; another forum member was getting all sorts of strange things with them.
I got a 12m Bettercables HDMI from Joe Fernand who frequents these forums.
He has an AV business in Scotland. He sent one down to me & offered for me
to try it before paying, & return it if I wasn't happy. It's quite pricey - about £183 I think - but since my pj was £3000 & player was £700 I needed something good.
If your source has HDMI output you might be better getting an HDMI & then
getting adaptor for pj like a QED HDMI - DVI. I've heard HDMI is better than DVI over longer distances & this applies even if you are converting to DVI, BUT the signal which is being sent, i.e. the source, must be HDMI. HOWEVER, don't quote me on this because I've only heard this. If you speak to Joe he can advise you better than I & he may let you try a DVI - DVI & if you have problems you can send it back & then try the above.
Good luck,
T