Check my math: Cost to move from a TP2 to an Evo

[pringlet]

I was on the Evo bandwagon and have been thinking about the switch since its announcement. Is the Evo worth the extra cost?

Current Plan:
SERO 500:
Cost per Mo. $30
Ins&Tep: $7
Surcharges: $2.16
Tax: $2
4G Access: $0
CorpDiscount:0%
Tot. Per Mo.: $41.16
24 Months: $987.84


Proposed Plan Req. For Evo:
Everything Data 450:
Cost per Mo. $69.99
Ins&Tep: $7
Surcharges: $2.16
Tax: $4.04
4G Access: $10
CorpDiscount: 20%
Tot. Per Mo.: $74.55
24 Months: $1789.18

Cost to keep the TP2 for 2 years: $987.84
Cost to own the new evo (including phone): $1989.18

If you are planning on switching, have you been able to formulate a better deal?

Thanks
pt