heard good things about the 2nd site, but if i were you id take a look at everybodydoesit.com, i cant vouch for it myself but ive never heard a complaint about them and ive seen many a threads about unsatisfied paraphinalia purchasers

edit: o and i beleive the other one also has a removeable bowl but its hard to tell but it looks like theres a rubber grommet on the stem