Good question on the fit. In general (and i have to use this term because fit comparisons are incredibly subjective as I'm sure you know), players we tested wearing skates like yours preferred the JetSpeed EE fit, and when it came to Super Tacks there was a move to D (because Super Tacks fit slightly wider than JetSpeed).
The real question is if you like how "very snug" you are in your current skates. If you like it, i would suggest an 8.5D in Super Tacks, whereas if you would like a little more room, then opt for the 8.5EE.
I hope this helps.
JS