Encouragement
I highly encourage any exodus from d20, especially to CODA. I feel CODA has great potential and the Decipher's layout for LotR is just a-frickin-mazing. I have never seen a layout better wrought,
Now, bear in mind I've played D&D since it was Chainmail and I was about 6 or so, so I have plenty of advice.
First and foremost, pick up a copy of the Moria booklet from ICE for their MERP system. You can probably find it on eBay cheap. Make sure you get the blue-bordered booklet that just shows stairs, not the $100 USD monstrocity that has the fellowship fighting orks on the stairs of Khazad-dum. On the inside front jacket cover is a great conversion chart for many rpg systems. If anyone needs a copy, I can post it to this thread, it's no trouble.
Also, if you're converting from d20 to CODA, bear in mind the XP difference; d20 levels are about 3000 XP or so a piece, whereas CODA's are 1000 XP.
I can provide more specific detail to any specific inquiry. Generally speaking, I do like the d20 system, but I do not like the quagmire of politics surrounding what was TSR. I grew up with TSR and when it was taken away from Gygax, I started a long and growing dislike towards the 'inheritors' of the company. And when WotC bought out TSR, I really just kind of lost the love for the whole thing.
About that time, I discovered Decipher and the CODA system and I've never really looked back. My playgroup has, likewise, embraced this new system and we are working towards bringing the details to where we want them.
CODA is a beautifully simple system that gives room for complexity, which I think will show its endurance in the ages to come. Plus, they've got the venerable name of Tolkien on their side...and you know, it really does make a difference. I have always felt...like I was playing a second-rate game when I played D&D. It wasn't Tolkien, and yet, it ripped off all the major ideas. I didn't care for the feeling, personally, so I think in that regard, I can sympathize a move to Decipher's line.
"First, learn to use this," he said, indicating the boy's head. "Then, I'll teach you to use this," indicating the sword.