No problems with the built in hose on my Topeak Race Rocket HP mini pump. I like it so well I normally use it to get a tire started from completely deflated, in preference to my floor pump. I'm planning to get the nearly identical Race Rocket MT for my lower pressure tires. But I usually take all my stealable accessories with me when parking and locking the bike, so the mini pumps suit me better ow.

The threaded pump head is less fussy than most clamp on heads that require mashing a tight rubber seal over the valve threads. I'd rather have had something like the longer Topeak Race Rocket HPX years ago than my classic Zefal pump. No worries about stressing the valve stem while pumping up to or near full pressure.