I think most people that complain about energy problems are not willing to put the points needed into boost.
I use both sacrifice and eboost (34/30) for ice shard (39/30) and firebolt (30/30) and e shield (31/30)
My focus is at 850 with 2 books and a crown of focus, still run out of energy relatively fast. Energy isnt a big deal at low lvl but just wait until you get a little bit higher.
I stand by my point and you neglected to quote the entire rest of my statement that said boost would not be enough.
Most people who complain about energy don't want to put points into boost or sacrifice because the want max dps.
I bought sigils and have stated many times that I think mages should try to have at least 400 energy sigils to enjoy the class at higher levels. I have made the case many time that there are energy and skill options available if you do not want to buy sigils but you will not be able to max dps.