Caveat alert: IME, I never managed to get a decent sound out of the BOSS pedals & multi's I've owned (but that is going back some time!), where I have managed to get some great sounds from Line6 products.
If you don't want to go the expense of buying a Helix, then have a look for a good second hand POD HD500X. Make sure you then buy yourself the HD Bass pack. It's a thoroughly underrated device, great sounds, etc. The downside is, it's no longer being developed (in favour of Helix), and the bass amp/cab sims are limited, however, at around £200-250 for a second hand model, it's well worth a punt.
I've been using mine for 2-3 years now, love it. Use it for everything, put it into the FX Return of my amp (bypass the amps pre-amp), and bypassed the amp for recording.
Saying that, I would consider getting the Helix LT (there's one in the Effects For Sale), but I can't afford one, and am really happy with the sounds I get from the HD500X.