Una Sugar and Iroha Soft sound really nice together! I can't find any examples of their soft banks specifically, but I'm using them together now and. Wow. 

I do think that Fukase's terms of service is a big deterrent for many. Most people want to get the most out of what they put into their work, and not being able to monetize what you do is a real deal-breaker for many. I actually know a couple of fukase songs I really want to buy and listen to but I just can't because most people can't sell them.From the short time I had Fukase (I CANNOT do trades; working with him was a pleasant experience though and I would buy him (lack of money and that dang TOS hold me back)) I think he works with Miku pretty well as well? But someone else already said that.
A lot of people get around that by just...distributing it for free. Which seems to be the only thing you can do, sigh...I do think that Fukase's terms of service is a big deterrent for many. Most people want to get the most out of what they put into their work, and not being able to monetize what you do is a real deal-breaker for many. I actually know a couple of fukase songs I really want to buy and listen to but I just can't because most people can't sell them.
On a more positive note, I actually do remember listening to this one cover of Lost One's Weeping that used Miku and Fukase! I think they sounded really good together in that.
And you shouldn't have to give your work away for free if you don't want to! I know there are plenty of producers who are happy just making songs and giving out the mp3s, but those who would like to profit off of their hard work shouldn't have to be bound by Fukase's license. I really would like to support the creators by buying their songs, but that really isn't an option if they use Fukase. It's kind of a loose-loose for everyone...A lot of people get around that by just...distributing it for free. Which seems to be the only thing you can do, sigh...