What Remote Start/Alarms Are Good These Days?

Ok so i think i have it figured out. I would either need the op-500 or the idatalink usb adapter to access all features of a compustar. Both are basically the same price +/- $20 but the op-500 can be used after the install is finished so that seems like the more logical choice. If i wanted to use a blade bypass i would go for the usb but i just dont need one for this truck. Let me know if this sounds like the right way to go or if im still not understanding something. I have zero experience with compustar brand alarms so im basically trusting the internet and we all know how easily that can send you around in circles buying unnecessary stuff.

I did research on this recently for a DIY install on a Compustar CM-900as. The OP 500 works, but depending on the programming options, you may need updated firmware of the OP 500. I saw older posts that said the firmware updates were exclusive to authorized dealers. Some ebay sellers state they will update firmware on the units before sending out. The USB adapter is a good alternative, but there are 2 types (USB-ECO and ADS-USB). The Eco (cheaper) version may not be compatible with some Compustar models. I didn't find issues with ADS-USB cable, so I went with that. It was very easy to use the Weblink software. Note that there's older info out there that says you need the blade cartridge to flash the brain or program options, but that wasn't the case for me. I updated firmware and programmed the unit without blade inserted. The only issue I ran into was the updated firmware added new programming options but there was no explanation about their function on the available install guides.