Well, in that case, I would weigh the odds of 
being able to get that other cel when it appears. 
 If your odds are good, then go for it!  If 
they're not so good (likely to have too high an 
asking price, likely to be bought by someone else 
before you get there, etc.) then I'd still take 
the sure thing over the iffy thing.  ^_^  Since 
you're traveling, I would think it would be best 
to get the Taro cels.