As far as my initial comment of wanting to transfer all my accounts to to the discover card as a balance transfer was to simplify my calendar, I have already established my good payment history with all my creditors.
I was always confused about the "Paying in full at the end of each month" and "maintain a small balance and pay off in small time increments" ideas. I was getting mixed reviews from people and was once told that paying all your balance off at once at the end of each month would not sit good with the creditors since they also want to make interest off of you, so I decided to pay small amounts at a time and allow them to make small interest dividends off me (not much really) in order that I may get what I want at the end. It actually helped because most of the credtiors gave me CLI's and the one account that I payed off every month has yet to give me a CLI.
I know it makes no sense to carry a balance over, I was just doing what seemed to be working for my credit to soar.
I appreciate your input and I think I will take your recommendations into consideration, as I am seeing more and more people here paying off their balances in full at the end of each month 
Regarding the $25 balance, leave that where it is. You likely have a BT fee to Discover, probably 3% or 4% with a minimum charge of $10 or so. The math don't work I also think you should be near the point with that card where the minimum payment is going to pay it off for you anyway. Minimum is usually something like $20.
The other balances though, go ahead and do the BT. There may be a fee involved, but that is up front, and then you have a year or so of 0% APR. The $300 balance isn't costing you a lot of interest today, so the 0% offer isn't going to save you a whole lot while you milk it, but it's fun and educational to do the BT anyway.
Now, the flip side of this is, if you want to maintain that 0% balance and not pay it off right away, it's going to mean you have to either not use the Discover card for new charges, or if you do use it for new charges, pay that amount over the minimum payment. The minimum monthly payment will apply to the lowest APR first, your BT amount, and then amounts over the minimum payment are applied to the higher rate balances: the new charges you might put on the Discover card.
For your other cards, let's get some terminology clear. You have the ability to charge each card up to it's credit limit only. If you are charging for daily spend, not for large purchases that you intend to pay off, then your best path is to pay that statement amount in full by the due date on the statement. You can continue to add new charges in the new month, until the payment due date, and as long as you pay that prior statement amount in full, you won't start the interest rate clock on all your new charges.
If, however, you let even $1 from that prior statement go unpaid, then the interest starts on all your new charges. At 25% and 29%, that's not wise. With those APR, and with 19%, you should be paying new charges in full each month, full stop. The 0% APR offer from Discover is an opportunity to carry some balances, but only during the 0% term, and as noted above, without polluting it with any new charges that are not part of the 0%. (Point of clarification, is the 0% APR offer only for balance transfers, or does it also apply to new charges during that same time period?)
If you do get a large purchase you need to make, and have payments over time, none of these cards are appropriate for that. The APR is just too high. Special financing may be available if you pay the entire balance within some time period, and don't leave even $1 oweing at the end of the time period. Often these financing deals back-charge all the prior interest if you don't pay it all off by the end of the 0% period.
You can call Discover tomorrow, and they may lower your APR, but it likely will go from 19.99% to 18.24%, not a noticeable drop. The APR on these cards typically starts out quite high, unless the applicant has a high FICO and long history already.
