Hi Marco
There's a lot of literature. Here are some recently published papers. You can access the abstracts with the provided link.
de Meester at al. 2014. Valve repair improves the outcome of surgery for chronic severe aortic regurgitation: A propensity score analysis
Conclusion: AV repair significantly improves postoperative outcomes in patients with AR and whenever feasible should probably be the preferred mode of surgical correction.
http://www.ncbi.nlm.nih.gov/pubmed/24656668
Saczkowsky et al. 2013. Systematic review of aortic valve preservation and repair.
http://www.ncbi.nlm.nih.gov/pubmed/23977553
Svensson et al. 2014. Long-term durability of bicuspid aortic valve repair.
http://www.ncbi.nlm.nih.gov/pubmed/24680032
Conclusion: BAV repair is safe and durable with low mortality, low prevalence of reoperation, and good long-term survival. Cusp prolapse from technical errors and natural progression of disease are the most common causes for reoperation, but progressive natural increase in valve gradient accounts for a substantial proportion as well.
Aicher D et al. 2011. Quality of life after aortic valve surgery: replacement versus reconstruction.
http://www.ncbi.nlm.nih.gov/pubmed/21450311
The current literature influenced my decision a lot. With repairs I think it's very important to be at a center that has extensive experience. Hope this helps.