Before buying a car, buy a good compression testing kit. It will save you a huge amount of headache (and money) in the long run. An OBD-2 scanner won't hurt either, although its not necessary. These things will save you from buying a lemon, to an extent.
Baleno is excellent if you find one in good condition (rust free unibody, engine not smoking, gear engaging smoothly). Its nippy, agile, and the back seats are more comfortable than a new XLi. You should be prepared to take care of it at more frequent intervals however; it is known to be problematic. we owned a 2004 JXR 4 years back. For the 6 months we kept it, there was a faulty brake disk, worn out front shocks, faulty electronics, starter motor failure, and a few minor problems besides. Stay away from it if you are not a mild gear head with a basic maintenance knowledge.
A well maintained 1998 or newer model Margalla is also good. It shares the same interior as Cultus, so you can still get brand new interior parts. Its comfort level is about the same as Cultus, but it has a boot, which would be more suitable for you since you travel far. It is an old model however; you should also buy a timing light and vacuum gauge. At least learn to set the ignition timing, setting the idle mixture and speed, and draining the radiator.
If you want comfort, stay away from Mehran as far as possible. I am only 5"11, and i am hardly able to fit in the drivers seat. The A/C also sucks if you don't maintain it properly, at frequent intervals. A 0.900 4th gear, combined with a 4.350 final drive, means that the engine is really noisy at high speeds. 3 decent sized adults are barely able to sit in the back seat for 10-15 minutes. After that, they start to get cramps and sores. There is also no space in the boot, save for a couple of small suitcases.
I would have suggested Cuore, but it has the same space confinement problem as Mehran. At the very least, Alto is needed to get to Multan and the Northern Areas with family.
Personally, I would have bought an 86-90 model Accord with a rust free body and salvagable engine, and restored it (I love working on cars, though I am currently only learning from my father). That option would not be suitable for you