STR seems to have better tax benefits (in the right market) but is it worth it at a distance ???

The cashflow should cove ALL of the expenses for the primary (mortgage, taxes, insurance, utilities, etc) AND put money in their pocket.

There are two reasons this is a bad idea.Investing with an SDIRA (assuming it is not a Roth) will often result in paying significantly more taxes. 

Quote from @Zara Massoud: Your new PM is correct and the old ones were wrong.The property manager must have your social security or tax ID number on file.

I used to live in the city and the taxes and water bills are nightmares.

We have about 60 properties and I'm looking for a software that will help me to manage renters and also will do partly accounting(efile 1099NEC, record all my expenses, vendors and prepare all the data for CPA for taxes).Right now I'm working with Buildium and it's a great software to manage everything related to a tenant but not really fits for my accounting needs like filing 1099NEC.

After 20+ years in real estate partnerships, here's what actually puts you on the IRS radar (and what doesn't):REAL Red Flags That Matter:The Partner Complaint TriggerDisgruntled partner files Form 8082K-1 disputesPartnership disputes leading to tax filingsReal Impact: Instant IRS attentionSuspicious Loss ClaimsLosses exceeding investmentArtificial basis inflationSudden large losses without economic realityExample: $100K investment claiming $500K lossesRelated Party GamesCircular property flipsBelow-market transfersFamily partnership schemes without substanceWatch Out: IRC §267 and §707(b) violationsDebt Engineering Red FlagsBasis inflation schemesArtificial guarantee arrangementsPartner debt shifts near year-endCritical: IRC §752 compliance matters!

Quote from @Fred Scott: Sunrise Capital Investors - Mobile Home Park Investment FundI've seen a few posts about them here but none of them actually talks about what the actual annual returns have been.They are advertising heavily for passive tax deductions which is fine but what are the actual returns over a period of (say) five or ten years?

It is your first year when you get the major tax savings windfall due to cost segregation and bonus depreciation.

Mostly because the tax incentives are *insanely* good.