Some of the largest statues in the world are sculptures of the Buddha. Carved out of mountainsides, shaped from natural rock formations, or painstakingly sculpted from different stones that are then put together, huge Buddha statues never fail to leave most people in awe. This was one of the main reasons for making them so large in the first place but it's not the only size shown by the Buddha statue. Smaller statues are actually the norm and this is demonstrated by many Buddhist temples in Asia. Although the largest statue is the centerpiece of the temple, there is typically a number of other, smaller sculptures in various shrines here and there on the temple grounds. The different sizes of the statues make it easier to be reminded of the Buddha and the importance of striving for humility.
The size of the Buddha statue for your garden depends on how you want to display it. If it's going to be the most important of all your resin garden statues, then a large Buddha sculpture is probably the best one to get because such an item tends to take center stage. If you would rather have the Buddha sculpture act as a simple highlight to an Asian-themed garden that also features a large tiger sculpture and other decor, then you probably need medium or small Buddha statues.
Find an assortment of Buddha statues and other religious outdoor statues at Design Toscano.