Ok.. so over the weekend I finished both, 'Forever Free' and 'Old Mans War'...
FF was better than the last two Halderman books... partially because it didn't end so abruptly. It's not as good as 'The Forever War' but a good read..
I literally just finished OMW like 5 minutes ago... picked it up last night and couldn't put it down. Excellent book, thanks for the recommendations guys. Apparently there are sequels to OMW so I'll have to get those now and google says that Paramount is planning a movie on it.