Good deal on a Ybravo 25. What didn't you like about your timemaster? The pro versions won't be any more powerful, only heavier and more durable. My time master rocks with turfmaster blades and a slight rpm bump. I originally wanted a Ybravo 25 but my dealer said $1500 when HD gave me 10% off.
Engine power is similar between the two, but i don't know if the twin blades on the T30 are an efficiency bonus or power hog compared to one large blade. All i know is it really works well for me and the 6 lawns i cut.
If the timemaster didn't work for you, the ybravo might not have enough power either, and you may need a good used commercial walk behind of some sort.