I can vouch for the R30 on medium wave. I strung 700 feet of wire out on the ground at a local park which is just 1 mile from a 5kw station on 1290. NO overload at all, in fact, I logged 1620 WDHP British Virgin Islands for the first time that night (I live in Wisconsin). For what it is, the R30 is a very well built rig.
I own a Palstar R30CC and it runs circles around the portables I previously used. It combines great sensitivity, selectivity, and dynamic range(and no synthesizer noise). The biggest complaint about it is it doesn't have direct frequency entry. But for me that is the best feature as I got bored with looking up frequencies and entering them and not tuning around. Without it I tune around the bands and run into unexpected signals as I did listening to my analog radios back in the day. And like k9rzz I reside about a mile from a broadcast station and get minimal interference from it.