what do you suggest buy x11 miners or scrypt miners for the next year and a stable profit i have free electricity
When you can get your hands one some D3 miners, you can use these for X11. There's no other machine on the market that has the same price to hashrate ratio than the Antminer D3.
Unfortunately, it can only mine X11 and therefore, you're pretty limited.
On the other handside, you could buy a Baikalminer which support multiple algorithms. It supports X11, X13, X14, X15, Quark and Qubit, so you have a lot more choices where you can switch to in case the difficulty for one algorithm rises exponentially.
You can mine Quark and Qubit and receive about 5$ a day, or you can mine OnionCoin on X13. Someone reported that they mined 4 Onions in 24h and the coin was worth about 5$ some days ago.
I would only buy Antminer L3+ for mining scrypt, but only if you can get your hands on some cheap ones. I see many offers over 2000$ which are alittle unrealistic I think. Litecoin may rise a lot in the future, but a mining revenue of about 700$ per month is not enough to spend more than 2000$ I think.
Maybe it's worth waiting for the Antminer L4, but currently we can only dream about this one, it has not been released yet.
To answer your question in some short words: As long as your electricity is free, mine with everything you can get your hands on! Everything except old Pc's with one GPU