Besides size is there much difference between the Era 1.5 and the hornet ? Basically if I was going to be using on the VV or the 2.1 am I better off with the era ?
Some persons are going to have a preference for either the ERA or Hornet. Some person, like me, don't really have a preference for either other than size with the Hornet fitting our small REOs. I like both equally as far as vape goes and as far as building coil. There may be a noticeable difference depending on how one vapes. I take several short draws instead of the "far enders" who take really long draws. So heating up is never an issue for me.
Although I do like the better durability of the SS Hornet caps I do love that we can get the aluminum caps in colors that almost perfectly match our REOs. So far the only ERA that we can get in US is the SS, polished or torched (easily removed with polishing if wanted).
If I didn't already have both ERAs and Hornets that are suitable for all our REOs I would probably go for the Hornet as my first Budz RBA so it would fit any of our REOs. In the first US group buy of Hornets we were able to get extra anodized aluminum caps, sans the base. Hopefully some day Budz will make that available to us again. (I'm not holding my breath.)
One thing to keep in mind is that colored anodized aluminum Hornets are available for purchase from US retailer 310vaper but, so far, Budz Worx has not released the colored anodize aluminum ERA anywhere but locally in Philippines. The bases for all Hornets are the same, SS, so you can use SS or aluminum on any of the bases. With the ERA you have the choice only of SS polished or SS torched.
Also keep in mind that you might, some day, want to pick up a Mini REO that is pre Mini with bigger well. Or even a re-homed Woodvil. Only Hornet will fit those.
Feisty Alice