Hellobee Boards

I have the Shark Pro Steam Mop (http://www.amazon.com/Shark-Professional-Steam-Pocket-S3601D/dp/B00ESP4J6O). After a year of use, I'm torn on how I feel about it.
It works pretty well - I can see it lift dirt off the floors right before my eyes. But it's a pain in the butt to fill with water (the water container doesn't come out so you have to angle it a specific way to fill it up) and the canister is small so you have to fill it quite frequently. The mop heads get dirty very easily and despite washing them per instruction, they don't seem to get very clean. I feel like it loses its effectiveness after a few months and they get kinda expensive to replace ($20 for 2).

So... I'm torn. On one hand, it works pretty well; on the other, the replacement heads are expensive. I want to try out this Bissell mop soon (http://www.amazon.com/gp/product/B0091YYUAM/ref=pd_lpo_sbs_dp_ss_1?pf_rd_p=1944579862&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B000RPVHZU&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1S29DXHBWFHK9BMAEP99). It got really good reviews.