Reference, Reference Upgrade, Anniversary, Special Edition,...

There will be others, just know it won't be tops for long. Great that we keep seeing product development. Fortunately the products are great and we continue to benefit from upgrades as we've just seen.

We do get bitten sometimes when products get upgraded moments after you've bought them (818v1, 7200.2 etc) but it sort of comes with the territory. We're not buying for an investment but for great kit.

They do tend to look after you well over time, the interface isn't perfect as it depends on your PP. Mine does a good job.