I'd always suggest Lenovo out of these two brands without a second thought.
Avoid the low brands at any cost. The service will be pathetic and so will be the ownership experience. You will soon find yourself in the market looking for an upgrade.
So go for Lenovo, It looks basic, that may be a concern for you. But within these two, its Lenovo. it's a decent phone and does what it says. I haven't used Lenovo service, but it cant be more pathetic than those brands with rebranded imports.
I find unite to be somewhere around 7k. If you have a budget of 7k, go for a Moto E without looking any further. Thats the best in that price range.