[WotLK] Best Store Items

I recently bought some credits for a total of 14 and I was wondering how to spend them in the store getting the best out of them.
The two items that caught my attention the most are:
1) http://wotlk.openwow.com/item=23162, since I'm planning on mass farming some lower-level dungeons; this would allow me for a faster gold-gathering and could lead me to buy gear from AH instead of spending credits directly on the store;
2) http://wotlk.openwow.com/item=46708, for that 310% speed.

What should i pick? Are there any better purchase options that I did not consider?
Let's discuss!

well bag is 8 coins and mount 13, so with 14 coins mount makes more sense as wut would you so with remaining 6 coins.
Well possibly buy an item from trade.

Other than that the bag cannot be obtained any other way, whereas a 310 mount can (ashes of alar(raid), green proto drake(egg) plagued proto drake(nax ach), big love rocket(love is in the air event) other raid ach mounts etc. If your willing to farm for it that is.

No armor and gear is worth buyin with 14 coins, unless u want xmog but even then try vote shop or ah for it. So y i would vote bag ultimately, maybe an item from trade after or gold (or some cool tabard (even pet)), or w8 and see sometime in the future u get more.