A capital lease (or finance lease) is the most suitable option. It is a long-term financing agreement structured to facilitate the eventual purchase of an asset. This model meets the company's needs by converting a large upfront capital expenditure (CapEx) into predictable monthly operating expenses (OpEx). It grants the lessee full control over the equipment for customization and upgrades, as if they were the owner. Crucially, a capital lease typically includes a bargain purchase option or automatic transfer of ownership at the end of the term, satisfying the desire for eventual ownership without a large initial investment.

A. Consumption based: This model is a pay-per-use service where the vendor retains ownership, which conflicts with the company's goal of eventual ownership.

B. Operating lease: This is a short-term rental agreement where the asset is returned to the lessor at the end of the term, failing the ownership requirement.

C. Capital purchase: This requires a significant upfront capital expenditure, which directly contradicts the company's stated budgetary constraint.

1. HPE Financial Services, "A practical guide to IT investment," Page 4, "Finance lease." This document states, "A finance lease is a way to acquire the IT you need and spread the payments over time... At the end of the lease term, you own the equipment." This directly supports the choice of a capital/finance lease for achieving ownership through spread payments.

2. HPE Financial Services, "IT investment strategies that drive business forward," Page 5, "Leasing." The guide contrasts an operating lease (where assets are returned) with a finance lease, which is described as a path to ownership. It notes that leasing "can convert a large capital expenditure into a more manageable operating expense," aligning with the company's budget requirement.

3. Brigham, E. F., & Houston, J. F. (2019). Fundamentals of Financial Management (15th ed.). Cengage Learning. Chapter 18, "Leasing," distinguishes between operating leases and financial (capital) leases. It specifies that financial leases are long-term, fully amortized, and often include an option to purchase the asset at a low price, making them functionally equivalent to a purchase financed with a loan. This academic source confirms the financial principles behind the correct answer.