RCU Forums - 2nd plane question...

I'm progressing in my training rather quickly. The sim has helped me tremendously so on my second training day (about 5-6th flight total) my instructor had me beginning to land my trainer, a Sig LT-40. I'm starting to think about what plane I might want for a second plane. I definately want a low-wing taildragger. (in fact I'm planning on converting my LT-40 to a taildragger after I solo prior to moving onto my 2nd plane.) I built my trainer from a kit and loved every second of the build so a kit is the only way I want to go for a second plane. I'd like to save a little money and reuse my OS 46ax from my LT-40 in my second plane. The 2 planes I have my eye on are the Sig Somethin' Extra and the Sig Four Star 40. I eventually want to get into aerobatic/pattern type flying. I've read here that the 4* is a bit gentler but also that the SSE can be a good 2nd plane with mild control surface throws and can progress to a rather sporty plane. I'd like to hear opinions and even suggestions for potential other 40 sized, low-wing, taildragger good 2nd planes that I have not mentioned. Thanks.