My daughter had been skating on the Eclipse Astra for 1 year, and we switched her to Coronation Ace 8 weeks ago, the first week of June (keeping her boots the same as they still fit and are broken in, but still plenty stiff). At that time she was at the same skating level you are now - except she couldn't spin. She could do 2 revolutions on 2 feet, and 1-2 very wobbly revs on 1 foot. Also, her backwards edges were not steady. In these 8 weeks, she can now spin 12-15 revolutions on 2 feet, 7 revolutions on an upright 1-foot spin from back crossovers, 6 revolution scratch spin with foot crossed, and 3-4 revolutions on backspin. She has progressed from unsteady back edges to doing backward circle eights, backward power pulls down half the rink (almost test-level, but not quite), has test-passable backward alternating edges, a back catch-foot spiral for half the rink (she already had these skills going forward), and forward and backward progressives. Jumps have gone from a beginning waltz jump (from a standstill) to having waltz, half flip, toe loop, salchow, and loop jumps all moving across the ice at speed from crossovers. And her stroking has also improved, like by a factor of 10. All of that, in 8 weeks. We are astonished, to say the least.
We were told that the Astra is 'fine', that the Aces would just cost more. That Astra was already quite an upgrade from what would usually come on skates for her level (she's 5 and wears a toddler size 10 boot, so stock blades are not very good), so we should be happy with that. Our skate tech said skaters don't go onto the Ace until they have an axel, or are close. But we could tell she was stuck, and had been for a while despite following all the coaching directions, so we took the gamble. We are absolutely THRILLED with her progress since changing to the Ace, and I strongly recommend you spend the money for them if you suspect you are having spin or edge problems. Her coach says a few more weeks strengthening the loop jump, and then she will start learning flip and lutz, and camel spin, power 3-turns, and the waltz 8 are supposed to start in the next week or so also. Also, she had essentially zero adaptation time. We took her to a public session after attaching the blades, bundled up with knee pads and a helmet, and she just zoomed off with no toepick catching or anything. She was instantly a LOT faster, as well. They are expensive blades, but at least you are getting something for your money. I shutter to think how many months of lessons it would have cost us for her to reach the same level wearing the Astra blades; at this rate of progress the blades are saving us money!