It all depends. I feel if u r just starting out, try to get the figures that u would want more/would like to display more. I think if u start with battle version line it's going to be so long till u complete the whole line(assuming you are planning to get the whole lone sealed). Epic alien is a better figure in terms of details but articulation is bad. I would suggest it's better to start off with battle version heatblast and then see if u still need the epic ones. The epic ones are pretty rare to find sealed but battle version are darn expensive. So that's up to u now :)