I'm building a toolkit for bike maintenance and I'd like to build one that I'll last, preferably forever

. Been looking at Wera, Wiha and Bondhus for an L-shape hex key set, seem like they're top notch. I have held the Bondhus in my hand but have no personal experience with Wera and Wiha.
This Wera set caught my eyes but don't know much else about them. Plus I worry about activating the warranty since they're located in Germany.
http://chadstoolbox.com/05022088001wera950spkl9smn9pchexpluskeysetmetric.aspx
Can you guys recommend a metric set of hex keys? Thank you and I'm glad I found this forum.
In my previous life, I was a professional bike mechanic for about 10 years. Allen, Bohndus, Park Tools and Pedro's are all good brands, even though Pedro's are Taiwan.
Get yourself a couple 3-ways or y wrenches:
4,5,6mm
http://www.parktool.com/products/detail.asp?cat=7&item=AWS-1#
2,2.5,3mm
http://www.parktool.com/products/detail.asp?cat=7&item=AWS-3
DON'T BUY THE BALL ENDS!!! (They round off super easy)
And a set of these:
http://www.rcsuperstore.com/ProductDetails.asp?ProductCode=BON10999&click=2
Don't buy Crapsman brand allen wrenches, they really are ****. I would stick with standard US made tools for starting out, they really can take heavy use. Make sure they have a ball end on one end for water bottle cage bolts - trust me.
You'll aso need cone wrenches:
http://www.parktool.com/products/detail.asp?cat=18&item=SCW-SET
Personally, I don't like Pedro's cone wrenches, they flex sideways under extreme pressure and pop off and go flying.
Better yet, get this set:
http://www.parktool.com/products/detail.asp?cat=6&item=AK-37#
Eventually you'll need most of that stuff, I don't like the other sets for people starting out. You don't really need some of the stuff in Park's other sets, that set is the best set if you don't have much yet.
The professional set would be nice, but pricey, and you really don't
need a headset press. (Threaded rod and washers for on-the-cheap)
Park Tools are excellent tools, they have a great warranty and really do take care of their customers. I have called them numerous times with warranty issues, and they are great. US made too!

(Years of shop use tends to be hard on tools)
If you're working on disc brakes, buy a heavy duty removal t25 from Snap-On, it'll outlast every other t25 about 5 to one.
http://buy1.snapon.com/catalog/item.asp?P65=&tool=&item_ID=1341&group_ID=158&store=snapon-store&dir=catalog
I could go on and on, but enough for now.