<human>: I just recently realized that I am close to the line between the 15% and the 25% tax brackets for 2012. I am contributing to my 401k up to my employer's maximum match, and I'm on track to max out my $5k of IRA space for 2012 by April.

I've already contributed about $2k to my Roth IRA, and I was planning on putting the whole $5k for 2012 in Roth. But when I prepared my federal taxes, I realized that if I put the remaining $3k of IRA contributions into a traditional, the tax deduction would get me into the 15% bracket and save me about $700 in taxes this year.

Does the lowered tax bracket now make the tax-deferred Traditional IRA contributions more desirable than the tax-free growth of Roth contributions?

Another concern of mine is that I hope to get raises over the course of my career, and may want to use the 'backdoor Roth' in the future. Will the backdoor be problematic if I already have a Traditional IRA?

If I had realized this last year, I would have just increased my 401k contributions to get into the lower bracket, but it's too late for that now.

Summarize the given text in a few sentences.
<bot>: If I can make a Traditional IRA contribution to get into a lower tax backet and save $700 in taxes, is it worth it, or should I stick to Roth contributions?