Share your preferences on Bluetooth OBD2 scanners w iPhones

I've been reading a ton on Bluetooth type OBD2 scanners that link to your iPhones with various APPS so you can do real-time scanning and scanning for DTCs-diagnostic trouble codes. Bluetooth devices such as Carista, Scantool and others. I am finding there is a plethora of products and APPS out there, but I also believe there are enough members on TW with a wealth of information worth sharing about pros and cons of these devices, who they feel makes the best one and why. I believe there are too many devices to run a poll, but maybe if I accumulate enough input with 2 products clearly being favored, then a poll could be in order.

Please provide your input on devices you own/are abundantly familiar with, including rough prices, what iPhone APPS/upgrades for universal vs Toyota specific vehicles. Might have to run a similar thread on the Gen 2 Tacoma forum as well for more input. Later maybe.

Sorry Android users, I'm restricting this to iPhone/Apple for clarity. Maybe another thread for Android later on, eh?

 

I don't suppose I have garnered much interest in this topic. I will keep digging into the subject, reading reviews etc and see what I can come up with.