I leveled up an alt not too long ago and used the following zones to level. All of these are hot zones:
60 - Veksar (Kunark)
65 - Bastion of Thunder (PoP)
70 - Arcstone (PoR)
75 - Jewel of Atikki (TBS)
80 - Fortress Mechanotus (SoF)
85 - Gyrospire Zeka (SoF)
Admittedly, 70-75 felt kinda slow since Arcstone sucks but it picked up again in JoA.
Once you hit 85, I suggest heading to Feerott in HoT. Do the merc upgrade quest if not already done so in the SoD expansion to get your J5 merc (min level to get the quest is 85). Then just work on progression. For what it's worth, I really enjoyed this expansion.
At 90, move to Argath in VoA and do progression. This expansion was ok, IMO, but nothing special. At 95, move to Shard's Landing in Rain of Fear and do the same thing. This was one of my favorite expansions, including revamped EW, CC and Kael zones.
I skipped CoTF and TDS so I can't offer much info there but a combination of those will get you from 100 to 105. At 105, move to Lceanium in Empires of Kunark and do progression. This one is important as you need it against Karzok mobs later on in the expansion as well as in the next one, Ring of Scale (RoS), which is 106-110 and current content.
The Burning Lands (TBL) was just announced coming in December but will not be raising the level cap.