So I also only play in paper as I’ve mentioned here before. I think in paper it’s so much of your meta game compared to modo. I love a high concentration of grudge in the main because I know I’ll see a lot of shops and I think that’s something to keep in mind as you go forward if you’re playing paper. If you’ve played legacy lands you have the mechanics down and it’s about learning the matchups and interactions in vintage. Personally I think broken bond is far inferior to grudge in the shops match.
I also want to point out I think a lot of people underestimate the power of manabond in vintage. I run a 3/3 split because I think the card is better than exploration in vintage and in my experience has proven that over and over again. The interaction between bazaar and loam with manabond is incredibly strong. In certain matchups you need to move faster and don’t need to worry about picking up side board cards as you go but would rather pitch as fast as possible to the yard. They share similarities but in a lot of ways this deck is much different than the legacy version which I think you’ll discover the more you play it.
The other nice thing is you can go a lot of different ways with this build as you see between my list and Mikes. I also like the manabond interaction a lot more and I’ve built in a lot more redundancy into my list to find those pieces I really need before a manabond comes down or after. Good luck building and testing!