Still new and learning but thinking the first thing to learn is to not look at my local shops newsletters every week. I was planning on getting another spare tank next but saw they have the Aspire Speeder on sale for $30 so think that sounds like a good deal. I have a spare mod but I don't think it will hold a 24 mm tank. The 22 fit perfectly and I don't know about adapters or whatever so...... I do have 2 batteries that are almost brand new so I think this is an option. If it matters I'm strictly low wattage MTL so I expect this to last me at least a couple days between battery charging. It also doesn't make sense to me why I don't like my other spare mod. I have it on the same setting as my Zenith and the Zenith just works better. Why on earth would they work differently on the same settings? I'm hoping I like the Speeder (or another affordable recommendation) better, preferably one that takes external batteries.