"shunyavadas and mayavadas btfo" i guess. here you see that many vaishnavas are like many christians who say "if you don't believe in a personal God, you aren't a monotheist and won't go to heaven". but of course, this isn't true. saguna brahman and nirguna brahman are both Brahman, Brahman is partless and non-dual. not being like human beings who are solely "personal" as well as comprising both sat and asat, sarva and shunya is simply part of what makes God so wonderful. but yes, its easier to reach God through bhakti of saguna brahman than through jnana of nirguna brahman.