I had both the 390 and 310 and preferred the 310 and liked the 310ETM even better for my uses on AM FM and SW. Never had the 380 myself though. Based on Gary's reviews comparing the 310 and 380 I chose the 310 for some reason I forget. This of course is just another opinion. I do not chase 9KHz stations from my inland location in CT.  I also think the stock 310 is much better than a stock 360 or GP-5/SSB barefoot, but it is so easy to use any sort of wire or loop connected directly to those two models.- FARMERIK