Questions about collectors and effect stacking

I was just looking up collector's items on GuildWiki, and I had a couple questions...

1) A lot of the collector items in Crystal Desert and Southern Shiverpeaks have the same stats. Are there cosmetic differences?

2) If I get a cane with 20% increased recharge and then a chakram with 20/20, how do the recharge values stack? Do I have 40% increased recharge, 36% (i.e. if the first 20% fails, the next 20% kicks in), or is it just flat out 20% no matter how many items you have?

Thanks for your help .

I don't know about the collector question, but I know you can't weild a cane and a chakram, since I believe canes are two-handed.

Just to clear one thing up. Canes are one-handed. Posting something you know for sure is great. But if you don't know for sure, it's best not to post or make it abundantly clear you're not sure. Canes are one-handed items. I'm not saying this as mod or a know-it-all, but from someone who reads these forums often. When you're looking for an answer it's important to make sure you can trust it somewhat.

OP~ Here is a link that answers your question.
Does "Improves skill recharge" stack?
Basically the answer is yes. Although it's not a linear progression to the stack as you will see from Ensigns explanation a few posts down the thread.