Tim, there isn’t 1 “best” light bar out there b/c everyone has different requirements/preferences for their bar. Some things to consider are:
1) BUDGET!
2) do you want slim/low-profile or a taller bar for a larger footprint
3) are you using it just for a warning bar, or do you want it for takedown/flood/scene lighting too?
4) do you want dual-color?
5) Nowadays, another question is whether you want flashing LEDs and/or “rotating” (rotabeam, SLR, etc) LED patterns. Remember that the LED “rotating” patterns are pretty pricey. I personally don’t love them by themselves, but think they are a nice addition when mixed in with flashing light heads)
My overall favorite light bar for fire appatus is the Whelen freedom. Bright as F@#K, dependable, and you have quite a few options (LED takedowns, flashing and rotabeam light heads, options to mount pioneer scene lights on it, etc). Start off with the basic NFPA version and then add some additional inboards as your budget permits. The FedSig Navigator would be my next choice since it has a lot of options and a large footprint. Whelen and FedSig are more the of the “premium” price point, though they do offer some more budget-friendly options like the Justice and Legend. Some ppl here like the vision SLR (V-shaped LED rotators that you see on a bunch of NYPD and FDNY units), but they’re $$$ and I don’t love them.
For a slimmer, more economical option, I’d recommend the Feniex Fusion with the 180 degree optics. The 180 optics provide good off-axis warning, while the 40 degree optics are more intense head-on but lack off-axis power. The benefits of the feniex bar are dual color (you can flash red with entire bar going to flood mode), it’s more affordable than whelen and fedsig, and you can mix and match technologies (ie custom config with 180 optics all around with maybe 2-4 forward facing 40 degree light heads). Sound off nforce is another solid option in a similar price point.
I would avoid code 3 because their LED products are overpriced junk, IMO, and don’t really offer anything special.
If you’re planning on holding onto your Simon Duplex for a while longer, I’d personally recommend getting a basic Whelen NFPA Freedom (corner modules, 2 red inboards, & 2 white inboards only) and using the remaining money to upgrade some of your perimeter warning from halogen/strobe to LED. I think it looks silly when ppl upgrade their rigs with a new light bar loaded to the max but have dying halogen lightheads everywhere else, b/c it’s not a sensible way to maximize a limited budget. Hence, I usually recommend that depts upgrade their perimeter warning (front/side/rear lightheads) over the light bar if their budget only allows them to upgrade one or the other
Hope this helps