IT really depends on what you can pick up a second combine for. We run two '82 l2's which are about the same as a l3 plus we picked up an older combine for parts. It works great in our area where we tend to switch back between corn and beans a couple of times a year, plus, the operating cost are soo low if you can pick up a parts combine. You may have to shell out almost a grand sometimes for one, but when your broke down on a saturday evening with 50 acres to go, its priceless. Secondly a m or l series is still a huge leap from an F2. We used to run two F2's one with fwd and then went to one l2 and that was much better. we have both a fwd and twd l2 and to tell you the truth, as long as you have just one with fwd, you really dont need 2 with it, but hey, you might. hope that helps