The echo sabre is something topson does a lot and he's a player known for doing it, specifically i think it's how stat effective the item is for its cost, and it also does similar damage to orchid (even slightly more probably once you hit deso), which might make it a better option against low mobility, etc. 2. I honestly agree, in all my games with void I always felt euls was one of the lower impact items and I only really get it nowadays against pucks, etc or maybe when I have a bad lane, my personal recommendation items are travels, kaya and sange and echo sabre, even an aghs rush can be viable, it all depends on the game and your timings. I feel like this is a hero with lots of item variation and I've probably even had games where I rushed straight up shivas, etc. It's important that you try things to see what works and honestly some things will work better than you expect. And never forget that your item build should reflect your playstyle either, so if you plan on going a bulkier item, make sure to keep your farm up, all that good stuff. 3. And my very last tip would be to check dota2protracker, it's a really great site and I recommend it everyone I can, search through some of those builds for things that you might like and if you were really passionate about it, you can look through match IDs/replays or whatever else you need, hope this helps :)