I dont have my fav bhop map, but I have few favourite deathrun maps:
dr_psykopat2 - easy to rush on bhop, cool minigame2
dr_cryptnecrodancer - easy to rush on bhop, cool minigames
vsh_dr_block_v9 - original (creative) traps
dr_undertale - nice soundtrack (from undertale), good looking map, nice minigames
dr_undertale - I like Untertale, I like the trap ideas, I love the music, awesome minigames. But if there are a lot of players on the server, it really gets hard to win a death. There are only a few reliable traps.
dr_r60 - Memes, funny traps, cool secrets and minigames. Bit hard though.
dr_block - Cool traps and secrets
dr_steamworks - probably the hardest dr map I know, but it really is a challenging map. Especially Auto-Mode. I love it.