I enjoyed using vegetable based parchment because we were being lazy and pouring our collection, straight onto the parchment. But we found that the vegetable based is thinner than usual and cannot be used for large yeilds.. still my favorite out of anything I've tried thats: -Not leaching -Doesn't seep through the paper -Possible to pour AND purge on -Has great nonstick capabilites when storing slabs http://www.amazon.com/Baar-8540-Patapar-Paper/dp/B001YIRZ28
This is one of the better deals I found for the paperchef rolls just now: http://www.amazon.com/PaperChef-Culinary-Parchment-15-Inch-98-4-Feet/dp/B008FIUUX6
These are some others I found that are silicon coated. To be honest I haven't found other vegi based papers without silicon other than Pataper.
http://www.amazon.com/Beyond-Gourmet-Unbleached-Parchment-71-Square/dp/B001KUWGDS
http://www.amazon.com/Regency-Natural-non-Stick-Parchment-Baking/dp/B001GEZ4W8
http://www.amazon.com/If-You-Care-Unbleached-Parchment/dp/B001IZIC8I
Edit: just saw your question about PTFE. Just speaking from experience.. when I ordered this roll from amazon, their was only 10-15feet on it.. when theirs supposed to be like 46 ft... PTFE is great if your just storing stable concentrates on it. But it's a thin plastic that bends if you pull it to hard and sticky concentrates aren't easy separating, even when frozen... Just my 2 cents
From America's Test Kitchen Season 14: Classic Italian Fare
WINNER
Rated as HIGHLY RECOMMENDED:
PaperChef Culinary Parchment Cooking Bags - $3.79 for 10 bags
Quick and easy, these parchment bags eliminate the fussiness of folding and crimping sheets of parchment paper and look better on the plate than a packet of foil does. Simply fill and fold—it’s as easy as stuffing a lunch sack.
The Amazon link below is twice the listed price.
Two were rated as RECOMMENDED:
The traditional French method of folding food en papillote has all the style associated with Paris but takes a lot of work. The packets look great but took more than four times as long to fold as the bags, and crimping and fully sealing the packets required scissors, a ruler, and skill.
No brand is specified, random amazon link below. ~OP
Aluminum Foil - $0.10 per use
Folding foil packets is easy and fast: It took a modest 2½ minutes to fill and seal one. But the presentation is poor: Your dinner looks like leftovers before you lift your fork.
No brand is specified, random amazon link below. ~OP