While the FDS does work with the Messiah Generation NEX, it has some issues with the FM sound that the FDS outputs and games like Castlevania and Doki Doki Panic don't sound very good at all.

I found a Famiclone seller selling original Famicom style clones with built in AV out (w/mono sound) on eBay + 5 random brand new repro Famicom carts + a set of Fami to NES and an NES to Fami adapters for around $50 total per set a few months back.

Out of all my famiclones (I've got a ton) it not only fits my FDS the best (obviously), but it has the best compatibility.

I can't remember where I posted about it ... or if the seller has any more sets to sell ... he doesn't have any listed on eBay (just one JP Fami light gun clone) but you can contact him and see if he has them to sell.

http://myworld.ebay.com/nweshp/

here are the pics of mine, it was BRAND SPANKING FRESH & NEW in the box and even included some decent random games including Transformers Mystery of Convoy (which is freaking awful, but pretty rare).









Totally the most "authentic" Famiclone I have ... the only thing it doesn't have is the microphone on the P2 controller. (But AV output makes up for that.)