I would go with the Mogul based bulbs and get the icecap unit.
Main reasons for saying that are accessability of replacements/availability of service.
I dont know anything about Reef Fanatic in terms of customer service, as I've never bought anything of theirs or from them.
I do know, MD is great and the few times I've had to get something returned or fixed after purchasing it from them, there were no questions asked, they just overnighted me a new one.
Finding bulbs for SE reflectors is much easier IMO than DE's.
BTW,
Congrats on the new baby!
Nick