As you are asking for feedback on BL I guess you already use lipo?
If not, IMO lipo first, then BL...(just remember not to let the lipo get discharged(flat) too much as they can be damaged by allowing that to happen...)You can buy lipo alarms for a couple of ££'s off fleabay and are a must if your esc is NOT lipo aware...
BL and lipo are the best things to happen to RC since ever..!
BL motors really are the biz... very low(virtually nil..) maintenance, faster, more efficient and look way better than Brushed...
As for cost, well the EZrun systems are well priced and are adjustable for boost, power curve etc.. but check they are ok to run at your club as they are not BRCA approved ATM... Tekin have a good price starter system and the feedback I've heard is good... I use Novak, but then again I'm easily pleased..!
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Don't believe the hype... Think for yourself.. 
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