My Showtime has a YS 110 and you 150 should be a good choice too. As for the batterys for the flight pack, I think he (EXTREM) is talking about Lithium ION type (not the Lithium Polymer) from Fromeco 2600 mAh run at 7.2 volts. I switched to the ION type 2 years ago and will never go back to Nimh’s. The ION are easer to charge (simple charger from Central Hobby) will charge the 2600 pack in less than 1 hour and will hold a charge much better than a Nimh. I also use a Radio South regulator and I do have a more powerful servo output and the Digital servos are more stable under load/idel. I also use the Fromeco 8 ball checker to keep tabs on the battery. This setup has worked better than anything I have used in the past. You can remove the packs and can use them in more than one plane so the cost can be kept down if you have more than one plane.