Buy a Thunderfunk now and you won't be sorry. If you really, really are sorry, for who knows what reason, you can turn around and sell the TF for 90% of what you paid.
If you get the Hartke and think you're happy, that's great. If you change your mind and decide to sell it, you'll lose 33% immediately, perhaps more.
Good equipment will always be good equipment.
Great equipment will always be great equipment.
The Thunderfunk is built and created here in the US by a premier head designer who has engineered some of the most important bass heads in gear history, and who has given up trying to satisfy the whims of mass-production companies that cut corners (to save a nickel.)
Thunderfunk heads clearly demonstrate their quality in every way and they really are worth much more than Dave charges for them.
Oh, and a child can carry the Thunderfunk head. It's only 17 pounds. I love carrying it into the gig with my bass in my other hand.