Since you have a Tata Safari, we assume you want the smaller car primarily for city use, and interior space or highway stability would not be that high on the priority list. Thus, we would suggest the Skoda Kylaq. Measuring under 4 meters in length, it is easy to manage in crowded cities, and the 1.0-litre engine is peppy enough. Importantly, it comes with the option of a torque convertor gearbox, which is the smoothest type to have and something you will appreciate in stop-and-go traffic. 

If it's a sedan, then check out the Honda Amaze. This too is under 4 meters in length, has light and easy controls, and while the automatic isn't a torque convertor. It has a CVT autobox, which is still the better option to have than an automated manual (AMT). 

Since your priorities are comfort and luxury we would recommend the Tata Safari. The interiors have a more luxurious feel and space and comfort is very good. The front seats are large and comfy and as is the second row too. 

Since you are specifically looking for a 7 seater we assume the third row seats would be important as well and here the Safari pips the Mahindra XUV 7XO with a slightly better third row. Access to it is straightforward via the flip-down seat and once back there, knee room is fairly good and you can slide the second row forward to adjust space between both rows. Third row passengers also get a set of dedicated AC vents with their own blower controls.  

The Tata Safari and Mahindra XUV 7XO are the best options for your requirements. Both are large SUVs with strong road presence and ample room in the first and second rows. 

However, it's the Tata Safari that has the better third row, with a bit more space and a comfier seating position. If the third row will be used often, we would recommend the Safari. 

The Mahindra XUV 7XO doesn't offer a middle row slide function, leaving no option to free up extra space for third row passengers. The third row is usable but is best for short commutes.