Homebrew PCBs

I to have been looking at using LED's for an exposure unit.  Since
most photo resist for PCB board are in the range of 350 - 420 nm.  I
was looking at Led's that had a wider spread in that range or in the
middle of that range might be better. Of course not having built it
yet, I can't say if that is true or not. 

BestHongKong
http://stores.ebay.com/BestHongKong_W0QQtrksidZp1638.m118.l1247

List three different LED's
x561 390-395nm   100/ USD $8.75 ship $8.95
x562 395-400nm   100/ USD $7.75 ship $8.95
x563 400-410nm   100/ USD $9.95 ship $8.95

I was looking at the 390-395nm ones 

Or I was also looking at
http://alan-parekh.vstore.ca/product_info.php/cPath/4_7/products_id/28
which have a range of 380 - 400 NM.

Tom