Ogg,
The Accura may be prone to this with stouter loads. I pretty much agree with UC, I think its something to monitor but I don't think its a major problem. Its not the barrel cracking but the weld between the barrel and the pivot block. I'm really not a fan of break actions anyway.
A better comparison of the omega would be the kodiak pro. I have a SS model. It has a very hard trigger and I plan to send it to CVA for service. Other than that, it a good rifle although I have only shot maybe 120 rounds through it. My Win Apex is bascially the same design. It has over 400 rounds through it. She's a sweet rifle and hasn't given a lick of trouble.
Whatever you choose, I'd be sure to get a SS barrel. It not that much extra.