We usually get 6 races each in at my club over the course of about 3 hours. I concede that's probably unusual, though. At the moment I get through about 3/4 of my 3700 packs in a race, but I see that I could probably get away with running a high capacity LIPO pack and putting it on charge immediately after a race, then using a second one - I'd be running lowish by the last race, but I'd probably get away with it. Brushless would sap the power a bit less too, of course.
What I liked about going brushed was that I was able to start off with a slowish motor and buy dirt cheap replacement ones as I improved. I'm running a really nice 9x1 V2 now that I picked up virtually new for 12 quid, and it pretty much keeps up with the brushless systems at the club - seems approximately equivalent to a 6.5bl. Now that I can handle the speed, I can think about buying a good quality brushless system without having to spend 50 quid on a new motor as soon as I outgrow it. I wasn't aware of the EZrun systems, though - as you say, they seem like pretty good value for money, and low hassle. You'd still, as with brushed, want to replace it with a high quality sensored brushless system eventually, though.
What irritates me is that when I came back to racing and asked on a forum (not this one) what I needed to buy to stand a chance in a club environment, I got told that I needed a brushless system and LIPOs that would set me back several hundred quid, or I'd probably get blown away. I now have in my car £45 worth of batteries and £35 worth of speedo/motor (speedo being an LRP v6.1), and I'm doing just fine. Sure, I'm getting towards outgrowing it, but it's spread the cost to the point that I can afford it. I think it's easy to forget that some people want to try the hobby out, and might be wary about (or unable to) sink a vast initial investment in.
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