V77,
I use both everyday.
Completely different products.
TS far more powerful. Better charts. Extensive history of data. Easylanguage is not easy but simple enough to write complex scans. Updates are seldom and minor bugs encountered. Occasional quirk. Nothing major.
Overall, I have had zero problems with QT. I think what you're might be running into is auto update or auto notification with QT revisions.
Turn it off. Those are BETA. Look in the top right hand corner of QT homepage. It will tell you some features of the beta additions. If they are irrelevant to your needs, dont bother.
I am like you. Dont change unless its necessary. For example, when Jerry puts in Universal Crosshairs to the charts, that is a version I will update to. Otherwise? Same with TWS. I hate forced upgrades.
I would recommend either without hesitation.
This is software only. TS brokerage is average/slightly above. Good for stocks, little slow for futures, FX could not tell you.