Steinsaltz classic edition to the Artscroll. There are a few reasons for this but my principle one is the different format. With Artscroll, both in the Hebrew and English, the footnotes seem to form a constant disruption while reading the text. You read a couple of words and bang! You need to look at a footnote. Then you return to the text, read a line or two and again, another footnote. I find this way of reading quite disruptive. It also doesn't help that half of the footnotes in the Artscroll are completely unnecessary and could have been interpolated into the text with a few words. In the Steinsaltz edition, the notes at the bottom are more comprehensive and can be read after finishing the sugya in question which allows my learning to flow more easily.
However, one major limitation of the Steinsaltz edition is that it only has one volume of the Yerushalmi, Peah, with no plans for more. If one wants to learn the Yerushalmi in addition to the Bavli, there is one popular effort, that of Artscroll's (surprise!) Like the Bavli, the format involves the text above and copious footnotes below. In addition, there are Hebrew and English versions in the works over the next few years. Wishing to pick up some Yerushalmi over the next few years, I had resigned myself to relearning the Artscroll method and planned on picking up some volumes.
And then one night while surfing on the internet I came across the website of one Rav Yechiel Bar-Lev, shlita. A quick look at Rav Bar-Lev's biographical information quickly reveals that (a) he is a very learned Talmid Chacham and (b) he clearly doesn't sleep, how else to explain the prodigious amount of work he has produced in the past few years. He has produced two important works, one an edition of the Zohar with a readable Hebrew elucidation, and an entire set of the Yerushalmi. One can view sample pages from both on line. The Yerushalmi, in particular, grabbed my attention for his unique format. Like the Artscroll he has the classic Talmud page and on the opposite side he has his interpretive Hebrew translation, copying Artscroll's fonts and style. However, at the bottom of the page his footnotes read like the Steinsaltz Talmud's, more comprehensive and not requiring one to look up and down, up and down, like the Artscroll's. A perfect synthesis.
Having ordered and received a set, I can say I have not been disappointed and look forward in the near future to starting a daf yomi with this edition to complement the Bavli one. I encourage everyone to peruse Rav Bar-Lev's site and see the products for themselves.