Please, can someone advise me on where to buy a good IR illuminator 850nm with wide beam angle for interactive floor project?

Thanks!
M.

Is this good choice?

http://www.yytrade.net/index.php/ir-led-illuminator/ir-illuminator/yy-trade-inc-yy-ir30-indoor-outdoor-30led-50feet-wideangle-ir-illuminator-60-90degree-view-without-power-supply.html

IR range: 50 feet (15 meters)
Wide IR projecting angle (60-90degree view)
Special Price: $19.99

or this one:

http://www.dealextreme.com/details.dx/sku.15235

Does anyone have experience with interactive floor setup?

I have found low-cost IR illuminators with 90 and 160 angle..

http://www.ebax.si/app/trg/product_info.php/ir-illuminator-vsir15-p-1706
http://www.ebax.si/app/trg/product_info.php/ir-illuminator-iri8120-p-1810

Are these LEDS powerful enough for interactive floor? Which of the two is a better solution?
Please reply as I am planning to order either of these soon…

Thanks!