Home 500 should not be even considered at all (the reasoning will be clear later). The choice is clearly between Home 500 C and Home 500 C+.
Home 500 C: This plan offers no telephone rental, usage limit of 1.5 GB, 175 free calls, 2 AM to 8 AM free usage, etc. all for Rs. 500 plus tax. This plan is suitable for those who
do not use internet much during day time and use landline telephone a lot.
Home 500 C+: This plan offers no telephone rental, usage limit of 2.5 GB, 50 free calls, 2 AM to 8 AM free usage, etc. all for Rs. 600 plus tax. This plan is suitable for those who
do use internet during day time and but not use landline telephone much. For an extra, Rs. 100 you get 1 GB extra usage but there is a loss of 125 free calls.
Home 500: This plan offers usage limit of 2.5 GB, telephone plan as per exisiting plan, 2 AM to 8 AM free usage, etc. all for Rs. 500 plus tax. But the greatest disadvantage is that you have to pay Rs. 180/- pm (plus tax) for landline rental. This plan is suitable for those who
do use internet during day time and and also use landline telephone.
Edit/add: Many people pooh-pooh the idea of BSNL landline telephone. They say that they have their mobile telephone which serves them for all voice purpose. But I beg to differ:
- Landline rates are cheaper than mobile rates
- BSNL (and MTNL) landline are indispensable for all toll-free calls.
- No issues of poor signal, dropped calls, etc.
- Phone bill is accepted as a valid address proof for many official purposes.