If both horns require overhauling no comparison you make now is going to mean very much.
But if you want an opinion ... I've owned an old Conn sop for about 13 years, and before that I had a Yamaha (62) for about 6. To my ears the Conn made the Yamaha sound like a toy. Once I'd played the old horn there was no pleasure to me in playing the YSS62 at all.
In some ways the Conn is harder to play, e.g. ease of fingering at the top, or getting a homogenous sound across different registers. Intonation is not a major problem -- I mean, playing in tune can be a challenge on any soprano, but my horn seems to work OK with various modern mouthpieces (Lawton, Pillinger, Link, Brancher). But individual examples of 20s Conns may differ in this respect.
High C, particularly cross-fingered, can be a weak note on all sorts of horns. Different mouthpieces, tip openings and reed strengths can all affect the response. I'd spend a little while finding a setup which minimises the problem, and then keep practising ...
Good luck.
But if you want an opinion ... I've owned an old Conn sop for about 13 years, and before that I had a Yamaha (62) for about 6. To my ears the Conn made the Yamaha sound like a toy. Once I'd played the old horn there was no pleasure to me in playing the YSS62 at all.
In some ways the Conn is harder to play, e.g. ease of fingering at the top, or getting a homogenous sound across different registers. Intonation is not a major problem -- I mean, playing in tune can be a challenge on any soprano, but my horn seems to work OK with various modern mouthpieces (Lawton, Pillinger, Link, Brancher). But individual examples of 20s Conns may differ in this respect.
High C, particularly cross-fingered, can be a weak note on all sorts of horns. Different mouthpieces, tip openings and reed strengths can all affect the response. I'd spend a little while finding a setup which minimises the problem, and then keep practising ...
Good luck.