Another vote for NYB. I might try this year, probably a wall hanging size.
Two other patterns I have always wanted to make, more for sentimental reason than difficulty are SAS and Lemoyne Star. Both are about half complete. The SAS was the first quilt I attempted as a teen 35 years ago (ended up in the waste bin). The Lemoyne is to replicate a wedding gift my parents received, the only quilt we had in the house growing up and very well loved. I hope to finish both by the end of the year.