I've migrated completely off my computer to my smart phone and cold storage. Mycelium works great for storing coin and also spending from paper wallets.
Is mycelium new or something didn't heard of it, basically i want to buy Bitcoin send to my wallet and send o an exchange, but first want to send it to my wallet so need something simple like the original, do you know how much space the bitcoin-qt takes?
Sorry, I stepped away from the forum for a day.. (I'm slacking off!) Idk how new it is, I've had it on my phone for a few months now. It's for android devices and you get it on the Play Store.
They are constantly adding improvements. It's a wallet, not an online front end like Blockchain, so the coins you send to it are on the device. It has an excellent backup system and it will tell you if you haven't backed up yet. You can add multiple addresses, you can send addresses to archive or have them active.
The fact that you can spend from a cold storage paper wallet without having to sweep the wallet is nice. Just scan a paper wallet, spend how much you want, and it will not keep record of the private key. Put the paper wallet away again before a drone sees it and you're cool.
Another thing I like about it is that you can add watch only addresses to your total wallet amount. So I can see how many bitcoins I have total, even though I only keep about one bitcoin on the actual phone, the rest on paper wallets and Casasius bars. Definitely the best wallet in my opinion.
That being said, I still run QT on my desktop just to add a node to the network, even though I don't keep coins on it.