[Q] Bad luck with charging cables, looking for best cable and wall block for charging topic

Hi -

I know there's been threads discussing various charging cables and blocks, but let describe 2 problems I've had with ones I've gotten, and I would very much appreciate anyone that has some good advice on this:
1) The micro side of the connecter keeps getting crappy, and over a short period of time, I have to hold the phone in a certain spot to keep it connected (dunno if I can do anything about this).
1b) Is it possible to put on new micro plugs? I have no problems soldering, using shrink tubing, etc., etc. if it wasn't a big deal to just replace those instead of the whole cable.
2) Out of all the cables and charging blocks I've tried, I seem to have the best luck with a Mediabridge cable from Amazon http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1. When working, and used with an OEM Samsung charging block, using the Galaxy Charging Current app, I get 1900 mA across the board (Reference, Maximum, Average). This compares to 1200/1900/1200 with the OEM block and cable.

I keep about 5 of the mediabridge cables around various places in my house, but it always seems like I'm buying 1 or 2 new ones every couple months.

So does there happen to be another cable that's more sturdy, and perhaps gets me a better charging rate (unsure if 1900 is about is high as I'll see)? And are there other charging blocks that supposedly work just as well or better then the OEM white Samsung one?

Thank you so much in advance for anyone that can offer any feedback!!!!