Hello, I am gradually gathering basic survival equippment. Recently I have purchased StrikeForce fire starter. Next items on my to-buy list are signal mirror and whistle.

Signal mirror:
I narrowed down my selection to StarFlash Ultra Mirror from Ultimate Survival Technologies - approximately 18 USD ( http://www.ultimatesurvival.com/product_view.cfm?product_ID=695 ) and Rescue Flash from Adventure Medical Kits - 9 USD. I suppose both are great. I have read some reviews - for example great reviews here by Doug Ritter and this review from Backpacker ( http://www.adventuremedicalkits.com/pop_news.asp?id=2006-10_Backpacker )
But I still wonder which:
- is more reflective
- is more scratch resistant
- is less breakable
- has better aiming technology

My favorite is so far Rescue Flash because it looks like high quality mirror for low price. Does it also float like StarFlash Ultra?
I would be thankful for opinions on those products or even experience of the person who has used them both and can compare them "side by side".

Anyway I could buy both in the future and have one backup mirror for me or someone else.



Whistle:
I will surely purchase Storm whistle and will carry it inside my backpack but I also want something small to my pocket for EDC.
So here are my candidates:

ACME 636 Tornado Slim Line - Marine ( http://www.acmewhistles.ca/ )

Ultimate Survival Technologies JetScream Whistle ( http://www.ultimatesurvival.com/product_view.cfm?product_ID=432 )

Fox 40 Micro Safety ( http://www.fox40world.com/index.cfm?DSP=...ery&id=4130 )


I wonder which performs the best.

Thank you in advance for suggestions, comparison etc.
Cheers.