I think you've got our answer already.
The dbx 160a is an indispensable tool for recording and live use, volume and dynamics management, etc. Everyone could use a good compressor live, and for recording, they're practically required for all instruments. But do you need to own one? That's your call. Most pro studios have a plentiful selection of compressors to use, including the dbx 160a, so most people may not have a reason to buy their own. But for someone who likes to always have the same reliable compressor on-hand, or has their own home recording setup, it's great.
The x2 wireless is just that - a wireless transmitter. Unless you jump around a lot or like to play more than 50 feet from your amp, you don't need it. Most of us will never play on a stage big enough to
require a wireless transmitter. The X2 is nice, and IMHO one of the best out there, but it's a novelty unless your gigging circumstances absolutely demand it. I'm pretty sure they don't.
