I would suggest that 3 years will take longer than you think.
I have a conversion and it was done just over a year ago, I have used it A LOT and I still have another 2 years to go, as soon as it expires, I will be putting in a new one which is a relatively simple procedure.
What I am saying is, If it is something you are interesed in, don’t write it off.
I personally reccomend it.
You might be interested in my thread for some more information
Any questions, feel free to ask.