Are The Broadband Mobile Plans offered by M1/Singtel/StarHub good for UNLIMITED surfing AT HOME too?

My Broadband contract with PI has expired and the renewal plan PI offered is $24.56/mth for 512Kbps unlimited with 1 year contract. However it seems that the other ISPs are offering faster Broadband Plans (eg 1 or 2 Mbps) at cheaper rate ($11.21 or $19.36 per month) with 6 months or 2 years contract. What's holding me back from changing ISP is PI's termination fee of $42.75 (yes, even though contract is over) and whether these other plans are really UNLIMITED (without any data limit/cap where they charge a lot more for "extra" usage) & whether these plans are good for home-surfing (which is what I do like 100% of the time, rather than surfing with my laptop outdoors). Do these plans offer the "BEST OF BOTH WORLDS" (both indoor and outdoor usage) since they are also cheaper and have shorter contracts as compared to the regular home-surfing plans. Or is there some shortcomings/catch I don't know abt? If you are in my shoes, would you jump ship and change to a cheaper and faster plan? Help!!!