Look like decent trainer planes. Your one plane is missing the muffler pressure tap. Most enyas will tune and run fine without it. Get good batteries for them. At least a 5 cell nicad pack. 4.8v 4 cell packs dont give you much margin with spektrum 2.4 systems. The radio that came with the planes probably dates them to late 80s to early nineties. I would advise you to change the switches on them too. Look over the wires on the old ones for signs of corrosion, they may be ok even though they are old. If the old batteries were left hooked to them for years they probably have black wire corrosion and are shot. That said, I have had 3-4 new heavy duty switches fail in a short time-- far more than the old stock switches that may have 20 years on them.. Sucks to change out a 20 year old switch for insurance and have the new one fail after 10 flights...... have fun!!