i have been an analog user for a long time. and paminsan-minsan, nakaka-sundot ako ng Multi-effects. about the BOSS ME series, i have had the BOSS ME50 twice before and now the BOSS ME70. happy naman ako so far sa ME70, also din dahil sa AMP Sim, nami-miss ko lang ung Acoustic Sim and the POWER SWITCH from the ME50.. other than that, the BOSS ME70 is fine.. i use it manually naman and if you're a BOSS pedal user, it's not far from it kaya madali gamitin.. yes, nice din ung Shredhead + ME70 + your Amp's line-in.
btw, i play Blues, Blues Rock and Rock N Roll.. yeah, it did justice.