The only Bond funds available to me in my 403B are:
Pimco Income Fund [(https://www.morningstar.com/funds/xnas/pimix/quote)](https://www.morningstar.com/funds/xnas/pimix/quote)
and
Baird Aggregate Bond Fund [(https://fundresearch.fidelity.com/mutual-funds/summary/057071854)](https://fundresearch.fidelity.com/mutual-funds/summary/057071854)
Any thoughts on either of these? Which one would serve as a good substitute for a Bond Index Fund?