I'm quite happy with my little 510-T so my main expenses have been extras. Extra cartos, carts, batteries, chargers, etc. I'm so relieved to be off the analogs that I'm afraid I'll have some kind of crisis with my equipment and fall off the wagon, so to speak.
EXACTLY how i feel! I have so much juice already! And I ordered two extra batts and an extra charger so I can always have two charging in case of a zombie apocolypse.