My wife and I are in the market for new bikes but have not ridden or owned bikes in over 20years. We will be retiring to the island of Cozumel soon and want bikes that are good for running errands around town but are also good for longer trips like the 25 mile loop around the island on the coastal road. There are also a few roads that are moderately rough dirt/sand that lead to remote bays and the like and it would be good if the bike could handle those as well. One additional consideration, since we're in a salt water environment we want something as rust free as possible. We'd like to get something of decent quality without breaking the bank. Also, since we'll in Mexico, service could be questionable so simple and reliable will be a big plus. Any recommendations would be greatly appreciated.