If you want to listen to "long distance conversations like from other countries" then you are not going to find that on the MURS, FRS, GMRS, and/or the Amateur VHF low band 6 meter, Low band 10 meter, VHF high band (2m) or UHF(70cm) bands. Where you will find those kind of conversations happening is down in the Amateur "HF" bands. Generally, but not limited to bands such as 12 meter (24.890 - 24.990mhz), 15 meter (21.000 - 21.450mhz), 17 meter (18.068 -18.168mhz), and 20 meter (14.100 - 14.350mhz). There are still many more below the 12 meter like 160, 80,40. Although Amateur radio operators have "EchoLink" & "AllStarLink Network" which allow them to communicate all around the world on VHF 2 meter and UHF 70cm you probably won't hear much of that unless you happen to be listening to a link when it's operational. Like Amateur, GMRS has some links operational but GMRS IS a USA only operations, which requires a license, and also requires operation on radios that are "type accepted" by FCC. Baofeng makes several different models of radios, some are approved (type accepted) for certain bands and some are not. Baofeng does make a "type certified" GMRS radio (although many GMRS operators use non certified radios because they happen to be both GMRS and Amateur radio licensed (which is still illegal but they do it anyways)). Yes, Baofeng sells radios for around 20 - 50 bucks, but don't sell them short. I'm retired RF engineer and two-way radio communication shop owner and some of what Baofeng make is actually a pretty good radio for the dollar spent. Of course, your die hard Icom, Yaesu, Kenwood, Motorola, operators will tell you Baofeng is junk only because they won't admit they spent way too much money for the equipment they have because they were paying for the name and not necessarily the quality. Some of those mfg's mentioned make some great radios for what they were designed for and then they also make some radio I wouldn't give you two cents for, ouut right pure junk to say the least. Remember this, if it wasn't for Baofeng these days, there wouldn't be any new Amateur radio operators to speak of cause many newly licensed operators wouldn't be able to afford an Icom or Yaesu radio. What many won't tell you also is, because of the Baofeng UV-5R radios and the BF-888s, many Amateur radio clubs around this country and other countries give them away to new members (newly licensed operators) so that it encourages the newly licensed operator to use the channels and expand their abilities. Hope this helps your understand of how different bands are available and in use for different reason.
amphibian