Etch was buildt for the old version of DB, the one you run when you're not using a buddy drop...
But EtchII is buildt for newer versions of DB and is realy tough.
I think the top 3 bots in F1 are Saber, Fruitflies and EtchII. In that order.
And I think maybe Quickdraw takes the first place now, but I'm not sure cause I've been too lazy to run it against everything in F1 and because I'm not sure wich bots are in F1... but I know it beats Saber and EtchII, and I'm pretty sure it beats Fruitflies (Fights took too long, never finished, but since Quickdraw is just Fruitflies with some raping behavior it should have the upper hand).
I still like Fruitflies better though, it's so simple, nothing advanced or complicated about it. It just uses natural selection to find the best tie attack by selecting it's attack from the epigenetic memmory, and since it's small and has litle energy it doesn't matter if some of them die from using the wrong attack
Either way those are 4 of the F1 bots you could take a look at, you'll find them all in the starting gate.
There's also some other good bots but can't remember the names.