Here's a quick reference I found here on the forum that you might appreciate.
Chinese Premium (Chips):
Short .com domains (2L, 3L, 4L) without the letters a, e, i, o, u, or v.
Western Premium:
The quality of the letter composition can play a significant role in determining 3-letter valuations. General concensus states that the letters A, B, C, D, E, F, G, H, I, L, M, N, O, P, R, S, T are considered premium letters. Other lesser high quality letters include: J, K, U, V, W. Lower quality letters include: Q, X, Y, Z.
Premium letter only domains tend to fetch a 500% to 600% premium (or more) over the Minimum Wholesale Price. Mixed letter quality domains have valuations somewhere in the middle of these two extremes.
WeChips are a mix between Chinese & Western. Ex: BHJK (Because J in Western is lesser high quality, but it does good for Chinese) and/or BHNN (all of 4 letters of these are good for Western and Chinese, which is call WeChips)
Good Luck and don't spend it all in one place!