Gross Proceeds clause, which one?

I’ve been given a choice of these two clauses for my lease. Which one should I choose, and why?

Gross Proceeds at Wellhead

It is agreed between the Lessor and Lessee that, notwithstanding any language herein to the contrary, royalties payable on gas and gaseous substances, including casinghead gas, shall be based upon the MMBTu value of unprocessed gas at the wellhead, free of all costs, charges or deductions of producing, treating, compressing, transporting and marketing said gas to such purchaser, which royalty, however, shall be subject to such production and severance taxes as are properly allocable thereto.

Market Enhancement Clause

It is agreed between the Lessor and Lessee that, notwithstanding any language herein to the contrary, all oil, gas or other proceeds accruing to the Lessor under this lease or by state law shall be without deduction, directly or indirectly, for the cost of producing, gathering, storing, separating, treating, dehydrating, compressing, transporting, and marketing the oil, gas and other products produced hereunder to transform the product into marketable form; however, any such costs which result in enhancing the value of the marketable oil, gas or other products to receive a better price may be deducted from Lessor's share of production so long as they are based on Lessee's actual cost of such enhancements. However, in no event shall Lessor receive a price that is less than, or more than, the price received by Lessee.

Thanks for any insight you can provide.