Ryan K,
Hi. I was in your shoes once. During that time, the Vanduran Java T75 was the suggested piece to me.
Speeding on up to this day in age...
I would like to inform you (and everyone else for that matter) that I currently have my Dukoff LD7 mouthpiece on auction at ebay. There are only 6 days left, no reserve, and it comes with a cap and rovner lig. Check the pics out at ebay.
Seriously, I think my LD7 would be perfect for you. Read my description on ebay. You mentioned you like the Coltrane sound, and are leaning towards a link. The inner workings of the LD7 are similar to links. This thing has an amazing colorful core to the sound (bluesy), and is a very easy player.
When Mr. Dukoff made this for me in 1996, I wanted a nice rich, full, projecting tone that was not as bright as his D7 model. He pegged it.
In conclusion, its really my loss sense I didn't put a reserve on it. Try to win that piece Ryan K (it's only at $45 right now) and you will have what you are looking for.
Peace Always,
SneekyJones