At the risk of sounding like a broken record, I should point out that Cliff Burton and his effects have been discussed numerous times before. A quick search will pull up a lot of helpful threads.
Regarding the wahs - if you really want a Burton-style non-funky roar, then the 105Q is the opposite of what you want. However, it's still a great bass wah, and many famous bassists use it.
As far as tone goes, the reissue Power Wah sounds closest to the old chrome Power Wah Boost which Burton had. The Dual Bass Wah has a decently close tone for the job in Traditional mode, but it doesn't have the range of the old chrome ones. I do really love the Dual Bass Wah, though, because unlike the Power Wahs, the Dual Bass Wah is far more bass friendly.
The Little Big Muff seems better to my ears for bass than the normal NYC model (a tad creamier, a bit more low end), but I wouldn't hesitate to consider a Bass Big Muff instead, as it's more versatile and bass-oriented. Plus, the main ingredient to Cliff's solo tone is the right wah, so I wouldn't stress about having a Muff that matches exactly.
Personally, I'd rather have great-sounding versatile pedals than the exact setup Burton had. I'd suggest going with a Dual Bass Wah and a Bass Big Muff. Then you can cop that sound without being trapped in it.
