1
Lopez would definetly be a great fit for the Astros.
I don't know if I'd trade them straight-up though.. The 'stros would need to eat some of that salary.
In general I'm not in favor of giving up top specs for a 1B given how loaded the FA class is next season. Berkman himself is a FA next year if the Astros don't pick up his $15mil option.
Pena as a salary dump however, could be interesting..