In reply to Stani49:
I've been on neither, but a few friends have tried and/or summited Baruntse in recent years and I almost went to PuthaH last year (went and did Pik Lenin instead).
The success rate on Baruntse has been very low mainly due to the big crevasse/slot thing very high up on the ridge. It's been there for at least 30 years. The way seems to be down and around to the left, this is what a mate did two years ago, he found it hard, but the only other successes I know of have used several Sherpas to do all that work. Many more have bailed.
There's some good pics and info (in French) on PuthaH at:
http://www.paulo-grobel.com/05_expes/Fiches_PDF/FT_cr_putha_hiunchuli.htm
Paulo runs guided trips that do very adventurous things, first and second ascents etc, with great success. I think Amical also guide PuthaH. Post-monsoon seems to be best success rate. There's a couple of smaller peaks near BC for PuthaH that you could maybe climb as well, to 'replace' Mera, and without the crowds.