I will say this. With a Tamiya conversion, if something goes wrong Tamiya will replace it free of charge. You buy it one Time. Can anmy of the other choices say that. One wrong connection an an RX 18 and your done. i don't care if it is 7 dollars or 70 dollars. you still need to pay for a spare or replacement. Same goes with all the other types. Now, I have done quite a few Tamiya conversions and never had to replace anything. I also have a new El-mod system for my HE Abrams. I also have 2 DBCRC3's from Dan for a HE Leo and an HL ZTZ99. So I am not biased towards one system or another. The Tamiya is just more reliable , plug and play and guaranteed for life.