I've never been too fond of internal tuners. Sure, they get the SWR down reasonably, and you can spend the entirety of your Ham life chasing 1.0 to 1, but all it takes is a tiny bit of tweaking and that's exactly what you have, 1.0 to 1. I understand it's only a flat SWR at the tuner, but I prefer the tuner take that small amount of heat instead of the rig.
I know, I know, the tuner doesn't change a thing at the feedpoint unless you use half-wavelength multiples, and if you operate on more than one band with one antenna, this is very hard. I understand an external tuner doesn't change radiation resistance or antenna efficiency, but hey, unless you live out in the country where you can put up a big tower out in the middle of a field, aren't all antennas compromise antennas?
I guess I just like having two or three extra knobs to twiddle, hi. See you on the air! 73, Richard, n5xm