So far I haven't been impressed with their margins, their comps or their high pressure tactics so I'm unlikely to buy through them.

If I hired a PM that would also take care of collections (among other things) would I still need a service like rent redi?

The deal exemplified our ability to identify opportunities, execute efficient renovations, and achieve impressive returns.

I did better than collecting rent. 

We were under the impression it was minimum 20% down for any second property

The rest have a combined worth of about 1.5 million but aren’t owned free and clear yet.All Properties are collecting rent and generate about $16,500 (profit) a month in Cash flow after mortgages/expenses.

About 4 years ago we purchased a retail center for cash and after stabilizing the tenancies financed $650,000 at 4% fixed 20 years with this lender.  3 months ago this lender allowed us to wrap their note in a new first lien we provided to a buyer with a 10% interest rate - essentially granting us the right to collect the differential between 10% and 4% on the principal balance (currently $610,000).  

During this year, I've experienced inheriting a crooked property manager I let go on day 1 that tried collecting rents from tenants weeks after, an eviction (same person) and a successful lawsuit against a non performing seller that backed out the day of closing. 

If I hired a PM that would also take care of collections (among other things) would I still need a service like rent redi? 

They have 6 figure jobs and just want to collect rental income and move on from their job ASAP.