40 year scanner addict, finally had it with the SDS100 (broken USBs, swollen batteries, SMAs busted), figure I had to try something new. Purchased a G5 from an official retailer (like an a-hole), paid $20 for programming. Dumb, they had no clue what they were doing. Within 20-minutes I had the programming where I like it. I immediately purchased a second G5, and I'm looking to purchase a third. I still travel my one SDS100 that works, but I use it less & less.
It is different, you cannot scan various sites, but if you have a small amount of traffic you'd like to scan this really works well, and the G5 reception quality is incredible. I can receive systems I never received before at home.
My suggestion is joining an G5 Facebook group and seeking them second hand. You'll overpay with a dealer, and they'll under deliver on time.