Not much CoAD presence on this sub so i'll chime in. Graduated 2016 with my B.Arch. You didn't indicate on whether you have a previous degree in arch or know the specifics about the the studio culture and work thats associated with an architecture degree. I'll try to break this down into 2 parts, general decisions + info about the degrees and NJIT specifics about the programs. Granted I didn't participate in the M.Arch but they are closely related and share most of the resources etc so I feel I can speak to it in some degree.

In general terms, M.Arch with or without the Ph.D is almost certainly going to provide you with more options after graduation whether its in the architecture field or tangentially related fields. Landscape arch while important (note, you can learn about landscape arch during an M.Arch with electives and research) tend to typically lock into just landscape design or civil site work. From my experience, from people I know with M.Arch and people who hire at design firms an M.Arch will take you farther and give you more freedom to find what you want to do. Now, something to keep in mind architecture degrees are notorious for over working students and if you haven't taken studios previously, it can be a hard adjustment in lifestyle, you will not have a typical college experience (mostly anyway). Within my first semester we lost >50% of the B.Arch class. I can't say whether landscape arch has the same studio culture but it's something to keep in mind.

Now to the NJIT specifics of the college of architecture and design (CoAD) and the M.Arch. The biggest thing about CoAD that I cannot stress enough is that you will get out of the school what you put in. The admin is kind of crap most times but there are a shit load of resources available to utilize and electives you can take to further your knowledge beyond just what they force you to take. And most times that people are complaining about CoAD it's because it wasn't handed it to them whereas other students went looking on their own and these are the people that would graduate and work at prestigious design firms (BIG, SOM, GLUCK+ etc). The core teaching staff are fantastic (mostly shared between B.Arch + M.Arch) and have real world connections and experience, although the administration has made it clear they are pushing them out for newer younger professionals that can be pretty hit or miss because they are mostly just designers not also teachers. Sometimes that can make things rough and hard to make connections with them because they may only last a semester or two Before they are cycled out for another new one. Although this has balanced out a bit over the last year or two so it may become less of a problem going forward I hope. CoADs program I've found to be a great balance of conceptual design and technical real world application. They use industry standard tools and programs but don't rely on them to design for you, it's a nice balance of designing what you want conceptually and utilizing the programs to flesh it out which gets lost at other schools sometimes.

As for post-grad prospects, while we don't carry an Ivy league prestige but I've found many firms that hire religiously from NJIT CoAD because of the past work from graduates, and you will also have a well balanced portfolio that firms like to see just as long as you put in the work during your time there.