I know that the original poster has made their decision, but I was faced with this same choice about a month ago so I thought I would throw in my two cents. Based on all the information I could collect on many rifles it came down to the x-bolt Micro Midas and Weatherby Vanguard S2 youth, both in 308 (I prefer youth rifles for their short length of pull, short barrels, and light weight.)
The best advice I can give is to try both rifles in a brick and mortar store before making a choice, because there's a big difference in fit and feel between the two.
Neither has the standard American style stock. The Vanguard S2 has a California style stock, and the x-bolt has a Euro style stock. I did not care for the x-bolt stock, when I mounted the rifle the only way to get a cheek weld was to put the butt pad very high, to the point where half the butt pad was at my collar bone or above. The only way I could see the x-bolt stock working is with a very heads up (chin weld) shooting style, which would require higher scope rings. By contrast the Vanguard S2 has a lot of drop right at the butt, which allows for a good cheek weld while simultaneously keeping the butt pad below the collar bone and in the meat of my pocket. All this being said, the way these rifles fit me may be different than the way they would fit you, so you should try both.
The triggers are also different and a matter of personal preference, though both were excellent. The x-bolt has a single stage trigger and the Vanguard S2 has a two stage trigger. I prefer two stage triggers, though I'm fine with a good single stage trigger, so this wasn't a big deal for me (but it may be for you).
I don't know about the accuracy of the x-bolt, but I do know that if my Weatherby wasn't a shooter I could have sent it back because Weatherby has an accuracy guarantee. Browning does not have such a guarantee. I suspect that the x-bolt would be a great shooter because most rifles today are, but the Weatherby guarantee provided me with some peace of mind over the Browning.
As you can predict from my observations I went with the Vanguard S2 youth in 308, which cost me about $480. I topped it with a Bushnell Elite 6500 in 2.5-16x42 (30mm tube) on Burris Signature Zee "medium" rings. It provides a wide zoom ratio (groundhogs to deer) in a package that's light enough to carry around but not too punishing to shoot (the rifle is 6.5 pounds naked, and under 8 pounds with scope, ammo, and sling.)