Looking for some suggestions on brands and colors for TRigging a 7-7.5" worm. Most of my friends use the Berkley Power bait Power worm and I was wondering what other favorites might be.

Ragetail Recon worm or Berkley Power Worm.

Culprit Fat Max in Okeechobee and original Culprit in Motor Oil flake.  I'm sure there are other colors better at times, but those have worked for me in the past.

Motor Oil is one of those cool, all purpose colors.  Pretty much works in any situation.

Culprit-black

Hard to beat a good ole culprit.

i really like the netbait t macs and for a larger size worm, i like the super t macs.

i have 3 worm colors: junebug, green pumpkin and black

My favorite trig worm is pi.

Zoom Mag II. Culprit makes a great worm, too, but just have an irrational confidence in the Mag II.

Powerworms. Cheap, scented, good color options, proven by years in production.

I don't fish a lot of t-rigged worms. They don't produce that great in my waters. I fish a 5" GYCB senko wacky style of a t rigged craw which kill. A t-rig does work well here for one month in the late summer when the grass matts up nicely. For that month, it is impossible for me to beat a zoom magnum trick worm in black. Flat out catches fish better than anything else I throw that time of year. Durable worm and even being a decent die worm has no problem getting through thick grass without getting snagged. 

I dig a power worm or original culprit, but, honestly....I don't think I've ever fished a 7"-7.5" worm I didn't like on a t-rig.

Grape Mann's Jelly Worm   

Havoc Juice Worm in redbug or watermelon candy.

I think it's just a matter of getting an idea of the fish's activity level. I don't fish T or C rigs like I used to, but a good (though not perfect) rule of thumb - the more active the fish, the more action you want in the tail of the worm. Not that a Culprit ribbon tail can't catch neutral fish or that active fish won't chase a Trick worm, but I've found that general rule to hold up 80% of the time when I'm worm fishing.

Color is just a matter of matching water clarity and sunlight. Lots of light and clear water - life-like colors. Less light - bright colors or colors like blacks and blues. Murky water - I'm fishing either a very dark or very very bright color with lots of beads/rattles (or more likely, fishing something louder than a t-rig)