I bought a UT Lite 2.1 early in 2014, so I guess I'm qualified to answer.
Short Answer: The Frame Geometry is superb but the drivetrain components suck.
Long Answer below:
By 500km and a few rainy rides, I had to replace the bottom bracket (pedal-crank axis bearing) to Shimano. I could have waited of course for a warranty replacement, but Rakesh from RR said Hero "Won't even know what a BB means". The front suspension stopped working in the first few weeks. RR kept putting off support because that problem "needed time", and before the year, the suspension had entirely seized, so much so that it wasn't possible to free up even using a hydraulic press :). The Kenda tyres that came with it were soft and rolled well, but picked up punctures every 200km. After 18 months of agony, I moved to specialized armadillo, and have had just one nasty nail coming through since. Similar litany of woes with the drivetrain. In 18 months, the rear axle (?) over which the thrust ball bearings roll, broke. It was rusted to high heaven, and it broke!. About the same time shifting became unresponsive. The stock chain and sprockets had worn in <4000km (my estimate). Even after changing chains and freewheel, I still have shifting issues but I'm not sure I'd attribute that problem to UT alone. The seat fastener becomes loose every a few months, and I need to dismount, re-adjust and tighten. Not a major issue, but still a niggle. I've often asked RR what UT is doing about the quality of their cycles, and he said that other riders haven't come back with as many issues. So maybe it's just me, and my cycle, in particular.
As for the good things, I find the geometry really nice. This is the same frame - not a design copy, actually the same frame - as what is sold at the higher priced Raleigh in UK. I reckon Hero just buys these off the same plant in China as everyone else. In the early days, I had reversed the stem to get a more aggressive stance on the flat bar, and it was still very comfortable.
As for B'Twin, I have two in the family. The only grouse I have with them is their ride geometry. Their city bikes are much too 'comfort' stance with your spine straight up. Their other bikes come with 90/110mm handlebar stems. Maybe their first experience with an Indian was someone with arms as long as a Gorilla, or they had excess stock of the longer stems and they decided to dump them all in India. The long stem really makes you stretch your arms to reach the handlebar.
For your current purpose, pretty much any cycle would do. But as you start to ride more, and if you're OK with having to make slightly frequent visits to the local bicycle service/ store, the UT is probably more adaptable of the two.
Hope this helps.