Investing in REITS - Which IG Account To Use; CFD or Share Dealing, and Why?

[Vegeta]

Hi all, 

I'm looking into investing in REITs for longterm using IG. I noticed I am able to invest via using the CFD account but also the Share Dealing account. 

I am wondering what the difference is between using one or the other apart from, I am able to to sell short with the CFD account which I cannot using the Share Dealing account, what else am I missing between the two accounts, is there advantages / disadvantages with either one?

Another question, if say for example I invest in BLND shares using the IG app, will I be investing in equity BLND or mortgage BLND, and how do I choose or know?

Cheers.

Edited March 14, 2020 by Vegeta