Hm, my favourite concerto is also Grieg's, but I also like Ravel's Concerto in G and Mozart's Concerto in d (KV 466, no. 20).
I do not know what is your level, but generally piano concertos are quite hard to play. If you are not an advanced player, try some miniature concertos.
Plus, think that you need an orchestra to perform it.

Best regards, Dr