In reply to Axel Smeets:
thats a hard one.
personally i go with a 8000m jacket (me annapurna) and mid-weight synthetic pants (marmot somethingorother).
i tried full pants and used them once and was too hot (pakistan, 7500m), then took my synthetics up and much better plus much less to carry.
a full suit i cant imagine, being even heavier, bulkier, less regulable and less multi-purpose (i wore my big jacket around bc on cold days).
im sure there are arguments for full suits (i salivate over the TNF one), but not this little chickadee.