Which Would You Say Is The Better Carpet Cleaner?
http://www.walmart.com/catalog/product.do?product_id=5774678
http://www.target.com/Bissell-QuickSteamer-Powerbrush-Lightweight-Cleaner/dp/B000AS9IL4/sr=1-8/qid=1242772951/ref=sr_1_8/192-1457542-7446643?ie=UTF8&frombrowse=0&index=target&rh=k%3Acarpet%20cleaner&page=1
http://www.target.com/Bissell-Titanium-Multi-Surface-Quicksteamer/dp/B0015ZVTEU/sr=1-10/qid=1242773381/ref=sr_1_10/192-1457542-7446643?ie=UTF8&frombrowse=0&pricerange=&index=target&field-browse=1038576&rank=price&rh=k%3Acarpet%20cleaner&page=3
or should I just rent one from the store?

well it depends. If you’re not hard on them you can probably get them to last awhile. If you’re not careful they will break. But honestly do you think a 90 dollar machine is going to clean and protect your $2000+ carpet?! (I don’t mean to be rude, just getting you thinking). I would rent one from a vacuum shop. Look for a Riccar carpet cleaner or a sebo dry cleaner. Other then that i would get it professionally cleaned. But to answer your question i would get the middle link, the qucksteam.
Bissell products are the best!
I have cats, and I have a Bissell Proheat 2X http://www.bissell.com/Products/c/uprigh…
The advantage of this carpet steamer is that it actually heats the water. I have had my Proheat 2X for about 2 years and other than the fact that the front piece is plastic (I broke it and had to replace it for a cost of about $10), I have no complaints about it.
I have 10 cats, so I steam-clean my carpets regularly.
I have the Bissell Big Green Clean machine, and I love it. Before I had it I rented the ones you get from the grocery store. They were useless. Don’t waste your money on them. Hope this helps.