Are you still looking for a cue?
Valhalla is a part of Viking, but a cheaper series. Not the same by any means, just targeted at lower budgets.
If you have about 200$ for spending... The Viking cue you mentioned... Add 30-40 more $ and go for a Viking with a Vikore shaft if you want Viking. I was thinking about getting a Viking as my new cue, but in the end I went for a Poison.
I got the Arsenic AR5 and made a review for it:
http://forums.azbilliards.com/showthread.php?t=305854
As you can see from the review, I am very very satisfied. There are cheaper Poison cues as well. Not sure if other sublines from Poison(Like Strychnine, Nitro and Bolt) play the same, but they do have the same shaft, so they should be way better than what you currently need. Poison is part of Predator, just cheaper series. Not the same though, but I can't praise my cue enough... It's really excellent.
http://www.billiardwarehouse.com/cues/poison/poison_pool_cues.htm
I won't lie to you, the only cues I know that play exactly the same as mine are Arsenic 3 and 4. AR1 and AR2 have different grips but should be about the same. AR1 is 220$ on the site. The first Nitro is 198$, though I can't give you any comments on the Octagon handle. Then you have Cyanide for 220$ and the cheapest playing cues are the blue and orange VX ones. Bolt should be good from what I've heard.
Check out the reviews on here:
http://selectbilliards.com/products/pool-cues/poison-pool-cues/