Here's my opinion.
Option 1 : Other Amp + Firehawk.
Choose this option if you...
- dial your tone or stream music via Bluetooth. (Unable to edit via PC)
- prefer tones search rather than setup your sound by yourself.
- prefer tones match function.
Option 2 : Spider V + FBV3
Choose this option if you....
- dial your tone or stream music via USB Cable. (Unable to edit via PC)
- prefer tones search rather than setup your sound by yourself.
- if you thought FBV3 cost is worth. (Actually, you can use other FBV like FBV shortboard or FBV Express MkII but FBV3 is fully supported Spider V)
- You love Drums loop/ Metronome/ Built-in WiFi/Full Ranged Speaker in Spider V 60 / 120 / 240
Option 3 : Other AMP + POD HD500X
This is my favorite option...... :P
- You must prefer editing your tones via PC Editor rather than Bluetooth.
- As I checked most reviews, I thought POD HD500X offers better sound than Firehawk or Spider V.
For example, you can freely combine AMP, Cabs, Effects as you like. I learnt that you can select AMP and Compressor more than 1 model at the same time. Check Craig Baker's review https://www.amazon.com/Line-99-060-2105-Firehawk-Guitar-Multi-Effects/dp/B00SLHWZ0M/ref=sr_1_1?ie=UTF8&qid=1487924616&sr=8-1&keywords=Firehawk
- No tones search, tones match, drum loop.