The yields are 8.45% for IGR, 6.6% for DRP and 5.6% for AWP so there is a significant advantage yield-wise for IGR. DRP and AWP both did pay out year end special dividends giving them higher yields but if you buy them now you just collect the monthly payouts which are lower. I think also it would suck if you owned DRP or AWP the last 4-5 months at prices higher or similar to today's prices, and then had to pay tax on a special dividend payout. REIT dividends are taxed at ordinary income, not at 15%. That forces you to pay a bunch of taxes on money you didn't earn.
I think all are going to do well going forward as they are pretty similar, but i think the 8.45% yield on IGR is more of a magnet for fresh money than something yielding 6.6 or 5.6%. Especially at a time that investors are gobbling up shares of REITs with miniscule payouts. I'm amazed IGR isn't a lot higher already but now technically we are seeing signs that IGR is breaking out from it's base. It was only recently that IGR was trading at a 3-4% discount to NAV. No reason it can't close that gap to NAV significantly now. Only question is will NAV continue to climb or will it fall, closing the gap. NAV today is $7.53.