You could not give me an Okuma trolling reel. Just try getting parts for the "popular" TL20 sometime. Okuma NA's "factory" customer service is non-existent and I say that as a wholesaler.
Anyone that says a 330 cannot pull an umbrella doesn’t know their way around a drag stack.
I have no experience with a 330LD, (not a fan) but the 330 and 320 star drags (#25 drag) will pull one with no problem once modified.
I wouldn’t buy the GT2. Go on E-bay and buy used Made in USA for a third to half the cost of new reels built in Asia. It typically doesn’t take more than a couple of dollars in parts to put them back into working condition. Bought 4 last year for $30 apiece. The guy took them part and put the gear “dogs” in backwards so the reel wouldn’t lock. Took me five minutes to fix.