Solo 401k VS SD IRA

[Jeff Caravalho]

I read on another post that IRA custodians don't like solo 401k's because they don't get commission. Can someone explain to me the fees & services for a solo 401k vs a SD IRA. I'm self-employed & had someone recommend the SD IRA over the solo 401K, which counters what others on this forum have said (ie. solo 401K is great for the SE)

Another dilemma I have is the fact I want my 1st rental for the tax advantages, IE. I would like to work on it, manage it, etc. - I know that's prohibited. Question is do I have the cart before the horse? Should I acquire 1st property outside of my IRA to get tax advantages THEN acquire IRA properties after that? Thx.