AT&T unlocked 920 LTE or 4G/3G connection

Why should I have to deal with caps or no tethering when I can get that on Tmo? Thats the whole point of paying for a service, being able to use it. ST really isnt a service for anyone who buys a phone like the 920 and actually wants to enjoy its features fully.

That's a pretty broad statement. In fact, with Tmobile, you still have caps, even with the so called $70 unlimited. See this from their site where they talk about the plan details:
Network Management: Data traffic of postpaid plans with limited high-speed data allotments greater than 2 GB will be prioritized over other currently offered plans during periods of congestion. Service may be slowed, suspended, terminated or restricted for misuse, abnormal use, interference with our network or ability to provide quality service to other users, or significant roaming.​

So unless you have a two year contract w/ Tmobile, you will still have to deal with caps.

Anyway, not trying to convince you otherwise, just saying that Straighttalk might be a viable option for people to try.
 
That's a pretty broad statement. In fact, with Tmobile, you still have caps, even with the so called $70 unlimited. See this from their site where they talk about the plan details:
Network Management: Data traffic of postpaid plans with limited high-speed data allotments greater than 2 GB will be prioritized over other currently offered plans during periods of congestion. Service may be slowed, suspended, terminated or restricted for misuse, abnormal use, interference with our network or ability to provide quality service to other users, or significant roaming.​

So unless you have a two year contract w/ Tmobile, you will still have to deal with caps.

Anyway, not trying to convince you otherwise, just saying that Straighttalk might be a viable option for people to try.

All carriers have this sort of data clause to avoid litigation related to complaints of slow or outage data. Even the mvno carriers have fine prints...ive learned that "unlimited" has its limitations. :)
 
So that one trouble spot I had with T-Mobile, I sort of found the problem. When I connect to an AWS tower in that area (Lumia 521), my download speed sucks, or I get nothing at all. When I connect to a PCS tower by rebooting, cycling airplane mode, or switching to my 920, my data speeds are fine. T-Mobile phones that support both AWS and PCS seem to be programmed to prefer an AWS signal over a PCS signal, even if the PCS signal is stronger. Anyway, I guess the AWS tower in that particular area is being worked on, while the PCS tower there is running fine.
 
All carriers have this sort of data clause to avoid litigation related to complaints of slow or outage data. Even the mvno carriers have fine prints...ive learned that "unlimited" has its limitations. :)

Precisely the point I was making. Everyone has caps, no matter if you are on an MVNO or full line carrier. Especially now when Straighttalk is now using Tmobile's infrastructure. So making a blanket statement that a full line carrier is better than an MVNO is too extreme. There are always nuances.

Now if you need the tethering that Tmobile provides as part of their service, and it's worth the extra $15 to $25/month then certainly go with that.