I also bought the E-cloth glass cloth $10 & it feels quite different than the Norwex Window Cloth. The main difference is the Norwex Window Cloth has that grabbing feel. Good quality microfiber grabs things like hangnails & dry skin. But only when the cloth is dry.
I thought all 3 micro fiber cloths cleaned well but the Norwex was slightly superior & didn't leave as much water behind. I also noted that the water left by the Norwex cloth dried 2-3 times faster than the other cloths.
I just ran upstairs & tested the Norwex Kitchen Cloth (3 for $19) & they work just as well as the Norwex Envirocloth $16 & they are antibacterial also. Everyone should buy that set. Imagine $6.33 for one cloth!
2. The Norwex Kitchen Cloth Set (3 for $19) is the best bargain.
3. The Hero Microfiber Glass cloth I bought at Canadian Tire is the best deal. All 3 glass cloths (Norwex, E-Cloth & Hero) work well but I would buy the Hero brand because of the price. (*update Nov 2013* The Hero Cloth's cleaning ability did not last as long as the other two...leaves streaks)
If money is no object & you are going to a Norwex party, I would recommend buying the following: Envirocloth , Kitchen Cloth Set, Window/polishing Cloth, Cleaning Paste, & Spirisponge. The latter 2 worked great on my glass top stove. I also love my dusting mitt & dish cloth but they aren't essential.
Final Final Word...
Everyone should be using the Norwex products (or equivalent product) because they eliminate the need to use harsh chemicals. I won't need to buy any more of the following: Windex, Comet, SOS pads, Mr Clean, glass cleaner in that spray can that I can't remember the name of, VIM, antibacterial towellettes, the 2 sided Scotch Brite sponges & probably more that I can't think of right now. I will definitely buy less paper towels & toilet paper too. (I mention toilet paper because that's what I used to clean the toilet...it was easy to flush away)
*update 3yrs later, Nov 12, 2013*
I am still using all my Norwex & e-cloth products daily. My original Norwex cloth is getting rather grungy but its lasted 3 yrs. Mind you, I haven't used it much this last year...I use the e-cloth towels more often. E-cloth now makes a paste so I will order some next year...I still have a little bit of Norwex paste left. I was using it sparingly because it was so expensive but now I can buy the e-cloth version. Yay!!
So my review still stands...both products are awesome but I'm buying e-cloths for the better value. I use the following e-cloth products regularly: general purpose, glass, dusting, yellow bathroom e-cloth (I use as a facecloth & love it), drinkware dying cloth (great on glass bowls & cyrstals), kitchen cloth with the edge scrubber, & the cleansafe electronics pack.