In theory, this post should be muuuuch shorter...
I've generally found INTPs to have the most concise use of language. ENTJs, a close second, but still ahead of the ENTP.
I've had other people mention this to and about me. Someone will ask whatever reason I don't talk much, like if I'm not feeling well or shy and they'll say, "No, he just doesn't waste words."
When it comes to writing I can babble with the best of them. If it's something like an e-mail I have to send for work then I may really choose my words carefully. It can be real senator-speak. Appease people w/out really promising anything. Just yesterday someone was asking me "How do I say this [...]" For some reason I really enjoy people edit. I've even made a buck or two off of it but will often find that there isn't enough pure content there and coming up with new ideas or material should be at a premium rate.
But, I digress.
I find talking to SJ to be much more difficult. It's very hard for me to talk with them sometimes. Haven't really analyzed why. I just tend to clam up. It's easier for me to talk to NT's. Even when talking to NF's, I'll feel self conscious if I go on to a third sentence w/out an exchange unless explaining a concept. With NT's I either don't need to or don't mind to. I don't know why this is or how I could break people's type down because I certainly can't do it otherwise. It's just some people I have a real ease with (some whose types I've later learned) and others not so much.
I like it when I'm able to say just one or two words and the people or person I'm talking to really "get" what I'm trying to say. There was one lady I met at a bar last year that I would've been so curious to know her type, we had the best verbal volley going. It got down to one word back-n-forth for like six exchanges. Then of course we'd completed all we needed to say.
Organizing thoughts in general or trying to convey an idea or emotion I find rather easy in the overall sense. I sometimes struggle for the precise word that best describes my feeling or pov. In speaking I like to know what I'm saying before letting words fly out my mouth. I really hate saying "Oh, I really didn't mean that" because it sounds so insincere. I've even played out full conversations in my head and not just difficult, "I don't think this is working" type ones. Just all the time talking to people about possible subjects that may never come up. How weird izat?!
I wish I had that same ease in talking as I do in writing to where I can sit down and let the words flow. I often sound old and slow because there's like the same 7 second radio delay going on in my brain so I can stop words from broadcasting. I have no idea why it's in place. It's not like constantly get in trouble over things I say, nor do I feel internally relieved from like 'Oh, good thing I didn't let that slip.' That's the main thing I wish I could get over.