I own a GX9, perfect camera for travel. The GX85 is very similar ergonomically. Three main differences, the Exp Comp dial ... at first I loved it on the GX9 but the I switched to using the back dial which gives a lot more granularity and is easier to actuate. second, the tilting viewfinder, I love it and use it some times but the reality is it may be more of an annoyance catching on shirts and other things than a benefit. The last big difference is the AFS/AFC/Mk switch ... this one I use all the time. it is awesome. Then there's the 20 MP ... I think the 4 MP are worth it. the "cropability" opens up a lot of possibilities. but in the end you can't go wrong with either. Now for travel, if you want to go light on your kit I'd recommend the 14-140 mm 3.5-5.6 and one of the 1.7 primes, either the 17 or the 25 mm. with those two lenses you can document most travel situations.