Should IIMs opened in 2015 (Jammu Sirmaur Vizag Nagpur) be preferred over IMT Ghaziabad?

No, I don't think the new IIMs should be preferred over a well-established institute like IMT Ghaziabad. I have seen many instances wherein people forgo offers from new IIMs to join IMT Ghaziabad.

The IIM brand has failed to convince students to join the new IIMs for a diploma. A cursory glance at the low placement figures last year at some of the relatively newer IIMs (Raipur, Rohtak, Ranchi, Kashipur, and Udaipur) when compared to their older counterparts, too, tells its own story.

Another important issue for management aspirants is that even if they are okay with the lack of infrastructure, full-time faculty members, and alumni, they cannot ignore the delayed start to the sessions at the new IIMs. While faculty members think that this time gap in starting operations can be bridged easily, students feel that they might lose out on their summer internships.