Hello all!
Ineeded some help with glow engine selection for FAIfuel. My target range is .25 engine ( on a $60-$80 budget) , viz.

O.S 25 LA
Fox .25BB
Enya SS 25BB

Which one of these will be the best for 0% nitro use.( Iwill be flying Corospit, Corostang and such SPAD planes.) even with FAI fuel not withstanding , which of these will be more durable , and still be able to punch out decent power? Unlike diesels, they need glow plugs and Iwill appreciate ideal plug recommendation as well.

Thanks and Regards!

cosmo