I know how it goes. Don't make personal recommendations because others don't agree. However, more than once have I been completely and utterly astounded at the quality I could get out of an Ilford FP4+ neg souped in the Pyrocat-HD developer. Not quite 16x20, but 12x16 enlargements from 35mm negs show so little grain that I had to look twice to believe it. I've tried the same with other films, and other developers. Have I come close to the performance of aforementioned combination? No.
I think Roger Hicks and Ole Tjugen et all are correct. This is what works best for me. Try it, it may work for you too. But I can't know that for sure. It's just my best suggestion.
By the way, the Hasselblad is an excellent camera. Ansel Adams shot LF most of his life, but towards the end of his career, he used a Hasselblad too for some of his work, and I have to say those prints are really nice too. Look at the work of Bill Schwab at this site, there are several of his pictures in the gallery. He uses Hasselblad cameras, and there's lots of landscape work that looks absolutely gorgeous. Have fun with it! I would love to own that Hasselblad camera if you don't like it...
(Just kidding, I think).
- Thom