Thanks for all your feedback, they mean alot!
About the glitches, yeah, there are still lots of things to fix. Time will tell how that'll progress.
Be sure the header of your NES ROMs are correct now if you want a proper screenmode. For technical interested, byte 9, bit 0 of the headers is set to 0 if it's an NTSC ROM or 1 for PAL. The PAL bit is rarely set on ROMs found on the internet so you may want to verify that bit if things behave strangely.
If A/NES is running too fast for you (perhaps on 040 and definitely on 060 systems), be sure the "limit speed" option is enabled in the GUI.