@Rw Pastore
Both NNN properties and DSTs are passive investment vehicles that are appealing to people looking to retire and that no longer want to actively manage property. Both have their pros and cons. Both appeal to different investor profiles.
Often times NNNs are more attractive to higher net worth investors. There's a lot of competition for NNNs in the $1-2mm range and many of these deals tend to be lower quality properties, eg. Dollar General in a tertiary location. The people that are buying NNNs intelligently and as a retirement vehicle are typically buying them all cash or with very little debt. They focus on the higher quality tenants & properties, which start at about the $3mm range.
Also if you're planning to 1031 exchange and buy a NNN, you should start looking for your replacement well before closing on your relinquished property. Especially if you have debt you need to replace and will need to get financing.
In regard to DSTs, there must have been some confusion from the brokers you talked with...DSTs are designed for investors that are looking to retire and 1031 exchange into something completely passive. The investor profile is typically someone that's looking for capital preservation, while looking to make a conservative ROR along with some capital appreciation. Most DSTs are all cash or 40-55% LTV.
It's important to go with high quality DST sponsors that have a track record of success. There's about 90 DST sponsors, but 15 of them account for 99% of all DST assets raised.
Right now we like inflation resistant asset classes-- multifamily, self-storage and MHCs.