I have two plastic primary fermenters a 6.5 gal & 7.9 gal. The 7.9 Gal I use for beers that have Lots of krausen. Plastic seems to be going good for me so far. I clean after use with "Clorox Free & clear Soap" & a clean soft sponge. I also use "One Step" On brew and bottling day, so far no problems with taste or scratching.
I DO use glass 5 Gal secondarys though.
So I guess use whatever you feel comfortable with. I can tell you that the Glass is more difficult to maneuver and store.
FV 1: Empty... :(
FV 2: Empty... :(
SV 1: Sour Blond
SV 2: Empty... :(
Kegged/Drinking: Empty... :(
2012 Awards: 1st Scottish 80/-, 2nd Kolsch, 3rd IIPA, 3rd Cream Ale, 3rd APA