
Here in the UK.
Ross-Tech VCDS HEX-V2 USB Package (3 VIN) = £225 / (10VIN = £299), (Unlimited = £499) (Upgrade 3-10, 10 - Unlimited = £169)
Pros - Very powerful diagnostic tool. Support forums are good.
Cons - Initial cost high for only occasional use/DIYer. Limited to 3 vehicles for higher functions/adaptions. All now have to be registered with Ross-Tech. Not sure how easy is is to transfer original user? [Just checked. Package to re-register cost is £199 with 3 new VINS. That makes picking up a limited VIN device second hand potentially pretty expensive]
OBDEleven/NextGen device + Pro VAG Plan = £100.
Pros - Relatively cheap. Good functionality, adaptions, output tests, etc. Use on as many vehicles as you like.
Cons - Ongoing cost Pro VAG subscription is £49/year additional credits are £18/100. Most higher functions require use of credits. Interface, not sure I'm convinced how good a phone app is to use as a diagnostic tool.
For myself? Doubt I would ever look at much of the higher functionality/coding abilities of either device. Just occasional use fault finding.
Functions I definitely need. Though I'm not sure OBDEleven has them all covered?
1. Diagnostic scan/Auto-scan of vehicle systems. (DTC's)
2. Adaption of components (throttle body/ABS/Battery, etc)
3. Record/graph live data
I'm leaning towards OBDEleven, even though my heart says VCDS is a more capable tool??