reflective mylar???

is this good enough quality for small closet op? http://www.ebay.com/itm/Highly-Reflective-Mylar-Film-4-ft-x-50-ft-/261284868387?pt=US_Hydroponics&hash=item3cd5cab123 or should I just go with this http://www.ebay.com/itm/Reflective-Mylar-Film-4-x-25-Mylar-Roll-M001-/271217689656?pt=US_Hydroponics&hash=item3f25d58438

If money is tight then go with flat white paint. If you want quality then Orca film is what I recommend. Watch this ->http://www.youtube.com/watch?v=c020_4EdIW0

It's 1mil thick, your better off going with a 2mill if you plan on doing more then one grow. That will be just fine but 1mil thickness rips Easier when whipping it down cleaning your room. Better yet I'd go with a flat white paint. Works just as good and cheaper

In my closet im using emergency blankets and it seems to do the job. found this amazing deal for $7: 10 Pack Emergency Blankets

good luck with your grow!

-Trippy

I use the emergency blankets too. I actually made a curtain out of one but you have to be careful of hot spots created by the crinkled material. And they do tear easily.
Now if you have a few bucks and want to do something more permanent Panda Film is a great idea. It costs some bucks but its good heavier weight stuff.
http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR1.TRC0.A0.Xpanda+film&_nkw=panda+film&_sacat=0&_from=R40