Any wallet that can handle "WIF" (wallet import format) private keys will work. Any specific you have in mind?
I did not have anything specific in mind,just looking for some new options regarding wallet.MultiBit Classic recently give me a few surprises,like yesterday when I open wallet it start to sync from beginning,like I reset blockchain and transaction.And I have problem to not see transaction which was confirmed on blockchain.
I see, maybe it makes sense to creep to a different wallet (e.g. MB HD if you come from classic) and use both for a while. This allows you to be indipendent of key imports. Most wallets however accept WIF imports unless they dont allow importing keys at all (like e.g. Multibit HD). Electrum (just to name a common wallet) lets you import the keys, but keeps them seperated from the addresses and keys derived from the seed. That way its obvious that the imported keys need an extra backup.