I already have this sword, which I bought at the AH in anticipation of switching to it as soon as I reached lvl 63. So far I have not equipped this sword.
But I found the new sword (stats) shortly before dinging 63.
Both swords are a major upgrade from Demonslayer, my previous 2-hander, and both new swords are slightly better, DPS-wise, than either my current polearm or 2-hand mace.
Comparing the two swords, Blade of Misfortune (BoM) has slightly higher DPS, while the Fel Iron Greatsword (FIG) has a slightly faster attack speed. Both swords have a large bonus to critical strike rating, higher on the BoM. The FIG has a bonus to Attack Power that BoM lacks, but BoM grants large bonuses to strength and stamina. (On the other hand, I may or may not really need the Str bonus, since almost every piece of armor I’m wearing also has a Str bonus of at least +20.)
Finally, FIG looks cool, but BoM looks freakin’ awesome 
In case it’s not obvious, my pally is specced Retribution.
As far as my cash reserves, I’m currently sitting at 1264g. I’ve got more gold than my guild’s bank at the moment. I’ll tell you what, I must be doing something right at the AH. I’d built up to about 1100g before I reached lvl 60, but paying for Journeyman Riding, buying a swift horse, and then starting in on the paladin charger quest chain busted me down to less than 400g. Now, in just 3 levels I’ve built back up to my current 1264g. I’ve also got several stacks of ore that still need auctioning (I’ve got 16 Truesilver Ores, showing a market price of over 100g for the stack, plus nearly full stacks of Thorium, Gold, and Mithril). I still haven’t found any takers for my Wirt’s Third Leg though, despite knocking the buyout price down to 50g.
Anyway, I don’t need to decide which sword to keep right away, since both my polearm and mace are adequate for the current level of quests I’m doing.